id sid tid token lemma pos tq57np2286r 1 1 it it PRON tq57np2286r 1 2 is be AUX tq57np2286r 1 3 essential essential ADJ tq57np2286r 1 4 to to PART tq57np2286r 1 5 develop develop VERB tq57np2286r 1 6 cost cost NOUN tq57np2286r 1 7 - - PUNCT tq57np2286r 1 8 effective effective ADJ tq57np2286r 1 9 and and CCONJ tq57np2286r 1 10 efficient efficient ADJ tq57np2286r 1 11 approaches approach NOUN tq57np2286r 1 12 to to PART tq57np2286r 1 13 convert convert VERB tq57np2286r 1 14 solar solar ADJ tq57np2286r 1 15 energy energy NOUN tq57np2286r 1 16 into into ADP tq57np2286r 1 17 other other ADJ tq57np2286r 1 18 energy energy NOUN tq57np2286r 1 19 forms form NOUN tq57np2286r 1 20 for for ADP tq57np2286r 1 21 our our PRON tq57np2286r 1 22 daily daily ADJ tq57np2286r 1 23 use use NOUN tq57np2286r 1 24 in in ADP tq57np2286r 1 25 the the DET tq57np2286r 1 26 near near ADJ tq57np2286r 1 27 future future NOUN tq57np2286r 1 28 . . PUNCT tq57np2286r 2 1 solar solar ADJ tq57np2286r 2 2 cell cell NOUN tq57np2286r 2 3 technology technology NOUN tq57np2286r 2 4 is be AUX tq57np2286r 2 5 a a DET tq57np2286r 2 6 crucial crucial ADJ tq57np2286r 2 7 tool tool NOUN tq57np2286r 2 8 to to PART tq57np2286r 2 9 effectively effectively ADV tq57np2286r 2 10 tackle tackle VERB tq57np2286r 2 11 this this DET tq57np2286r 2 12 challenging challenging ADJ tq57np2286r 2 13 task task NOUN tq57np2286r 2 14 due due ADP tq57np2286r 2 15 to to ADP tq57np2286r 2 16 its its PRON tq57np2286r 2 17 low low ADJ tq57np2286r 2 18 cost cost NOUN tq57np2286r 2 19 and and CCONJ tq57np2286r 2 20 flexibility flexibility NOUN tq57np2286r 2 21 in in ADP tq57np2286r 2 22 device device NOUN tq57np2286r 2 23 design design NOUN tq57np2286r 2 24 . . PUNCT tq57np2286r 3 1 recently recently ADV tq57np2286r 3 2 , , PUNCT tq57np2286r 3 3 hybrid hybrid ADJ tq57np2286r 3 4 inorganic inorganic ADJ tq57np2286r 3 5 - - PUNCT tq57np2286r 3 6 organic organic ADJ tq57np2286r 3 7 perovskites perovskite NOUN tq57np2286r 3 8 were be AUX tq57np2286r 3 9 identified identify VERB tq57np2286r 3 10 as as ADP tq57np2286r 3 11 promising promise VERB tq57np2286r 3 12 light light NOUN tq57np2286r 3 13 absorbers absorber NOUN tq57np2286r 3 14 for for ADP tq57np2286r 3 15 solar solar ADJ tq57np2286r 3 16 cell cell NOUN tq57np2286r 3 17 technology technology NOUN tq57np2286r 3 18 owing owe VERB tq57np2286r 3 19 to to ADP tq57np2286r 3 20 their their PRON tq57np2286r 3 21 superb superb ADJ tq57np2286r 3 22 power power NOUN tq57np2286r 3 23 conversion conversion NOUN tq57np2286r 3 24 efficiency efficiency NOUN tq57np2286r 3 25 . . PUNCT tq57np2286r 4 1 following follow VERB tq57np2286r 4 2 the the DET tq57np2286r 4 3 remarkable remarkable ADJ tq57np2286r 4 4 success success NOUN tq57np2286r 4 5 of of ADP tq57np2286r 4 6 applications application NOUN tq57np2286r 4 7 of of ADP tq57np2286r 4 8 ch3nh3pbi3 ch3nh3pbi3 ADJ tq57np2286r 4 9 perovskites perovskite NOUN tq57np2286r 4 10 in in ADP tq57np2286r 4 11 photovoltaics photovoltaic NOUN tq57np2286r 4 12 , , PUNCT tq57np2286r 4 13 a a DET tq57np2286r 4 14 great great ADJ tq57np2286r 4 15 focus focus NOUN tq57np2286r 4 16 has have AUX tq57np2286r 4 17 been be AUX tq57np2286r 4 18 placed place VERB tq57np2286r 4 19 on on ADP tq57np2286r 4 20 their their PRON tq57np2286r 4 21 stability stability NOUN tq57np2286r 4 22 for for ADP tq57np2286r 4 23 establishing establish VERB tq57np2286r 4 24 foundations foundation NOUN tq57np2286r 4 25 for for ADP tq57np2286r 4 26 the the DET tq57np2286r 4 27 long long ADJ tq57np2286r 4 28 lifetimes lifetime NOUN tq57np2286r 4 29 for for ADP tq57np2286r 4 30 perovskite perovskite ADJ tq57np2286r 4 31 solar solar ADJ tq57np2286r 4 32 cells cell NOUN tq57np2286r 4 33 . . PUNCT tq57np2286r 5 1 in in ADP tq57np2286r 5 2 this this DET tq57np2286r 5 3 dissertation dissertation NOUN tq57np2286r 5 4 , , PUNCT tq57np2286r 5 5 i i PRON tq57np2286r 5 6 have have AUX tq57np2286r 5 7 investigated investigate VERB tq57np2286r 5 8 the the DET tq57np2286r 5 9 effects effect NOUN tq57np2286r 5 10 of of ADP tq57np2286r 5 11 different different ADJ tq57np2286r 5 12 environmental environmental ADJ tq57np2286r 5 13 conditions condition NOUN tq57np2286r 5 14 on on ADP tq57np2286r 5 15 physical physical ADJ tq57np2286r 5 16 and and CCONJ tq57np2286r 5 17 chemical chemical NOUN tq57np2286r 5 18 properties property NOUN tq57np2286r 5 19 of of ADP tq57np2286r 5 20 hybrid hybrid ADJ tq57np2286r 5 21 inorganic inorganic NOUN tq57np2286r 5 22 - - PUNCT tq57np2286r 5 23 organic organic NOUN tq57np2286r 5 24 perovskites.to perovskites.to NUM tq57np2286r 5 25 achieve achieve VERB tq57np2286r 5 26 outdoor outdoor ADJ tq57np2286r 5 27 applications application NOUN tq57np2286r 5 28 , , PUNCT tq57np2286r 5 29 the the DET tq57np2286r 5 30 influence influence NOUN tq57np2286r 5 31 of of ADP tq57np2286r 5 32 operating operating NOUN tq57np2286r 5 33 conditions condition NOUN tq57np2286r 5 34 ( ( PUNCT tq57np2286r 5 35 ambient ambient ADJ tq57np2286r 5 36 conditions condition NOUN tq57np2286r 5 37 , , PUNCT tq57np2286r 5 38 heat heat NOUN tq57np2286r 5 39 and and CCONJ tq57np2286r 5 40 light light NOUN tq57np2286r 5 41 ) ) PUNCT tq57np2286r 5 42 on on ADP tq57np2286r 5 43 the the DET tq57np2286r 5 44 stability stability NOUN tq57np2286r 5 45 of of ADP tq57np2286r 5 46 such such ADJ tq57np2286r 5 47 perovskites perovskite NOUN tq57np2286r 5 48 should should AUX tq57np2286r 5 49 be be AUX tq57np2286r 5 50 comprehensively comprehensively ADV tq57np2286r 5 51 studied study VERB tq57np2286r 5 52 . . PUNCT tq57np2286r 6 1 thus thus ADV tq57np2286r 6 2 , , PUNCT tq57np2286r 6 3 the the DET tq57np2286r 6 4 transformation transformation NOUN tq57np2286r 6 5 of of ADP tq57np2286r 6 6 ch3nh3pbi3 ch3nh3pbi3 ADJ tq57np2286r 6 7 perovskite perovskite NOUN tq57np2286r 6 8 films film NOUN tq57np2286r 6 9 were be AUX tq57np2286r 6 10 explored explore VERB tq57np2286r 6 11 under under ADP tq57np2286r 6 12 ambient ambient ADJ tq57np2286r 6 13 conditions condition NOUN tq57np2286r 6 14 and and CCONJ tq57np2286r 6 15 at at ADP tq57np2286r 6 16 elevated elevated ADJ tq57np2286r 6 17 temperatures temperature NOUN tq57np2286r 6 18 . . PUNCT tq57np2286r 7 1 it it PRON tq57np2286r 7 2 was be AUX tq57np2286r 7 3 found find VERB tq57np2286r 7 4 that that SCONJ tq57np2286r 7 5 the the DET tq57np2286r 7 6 decomposition decomposition NOUN tq57np2286r 7 7 of of ADP tq57np2286r 7 8 ch3nh3pbi3 ch3nh3pbi3 NOUN tq57np2286r 7 9 into into ADP tq57np2286r 7 10 other other ADJ tq57np2286r 7 11 lead lead NOUN tq57np2286r 7 12 compounds compound NOUN tq57np2286r 7 13 occurred occur VERB tq57np2286r 7 14 under under ADP tq57np2286r 7 15 these these DET tq57np2286r 7 16 conditions condition NOUN tq57np2286r 7 17 . . PUNCT tq57np2286r 8 1 the the DET tq57np2286r 8 2 chemical chemical ADJ tq57np2286r 8 3 changes change NOUN tq57np2286r 8 4 in in ADP tq57np2286r 8 5 the the DET tq57np2286r 8 6 decomposed decompose VERB tq57np2286r 8 7 films film NOUN tq57np2286r 8 8 were be AUX tq57np2286r 8 9 found find VERB tq57np2286r 8 10 to to PART tq57np2286r 8 11 cause cause VERB tq57np2286r 8 12 a a DET tq57np2286r 8 13 significant significant ADJ tq57np2286r 8 14 decrease decrease NOUN tq57np2286r 8 15 in in ADP tq57np2286r 8 16 the the DET tq57np2286r 8 17 photovoltaic photovoltaic ADJ tq57np2286r 8 18 efficiency efficiency NOUN tq57np2286r 8 19 of of ADP tq57np2286r 8 20 ch3nh3pbi3 ch3nh3pbi3 PROPN tq57np2286r 8 21 . . PUNCT tq57np2286r 9 1 it it PRON tq57np2286r 9 2 is be AUX tq57np2286r 9 3 also also ADV tq57np2286r 9 4 important important ADJ tq57np2286r 9 5 to to PART tq57np2286r 9 6 study study VERB tq57np2286r 9 7 the the DET tq57np2286r 9 8 influence influence NOUN tq57np2286r 9 9 of of ADP tq57np2286r 9 10 light light ADJ tq57np2286r 9 11 illumination illumination NOUN tq57np2286r 9 12 on on ADP tq57np2286r 9 13 the the DET tq57np2286r 9 14 stability stability NOUN tq57np2286r 9 15 of of ADP tq57np2286r 9 16 hybrid hybrid ADJ tq57np2286r 9 17 perovskite perovskite NOUN tq57np2286r 9 18 . . PUNCT tq57np2286r 10 1 under under ADP tq57np2286r 10 2 light light ADJ tq57np2286r 10 3 illumination illumination NOUN tq57np2286r 10 4 , , PUNCT tq57np2286r 10 5 halide halide NOUN tq57np2286r 10 6 ion ion NOUN tq57np2286r 10 7 segregation segregation NOUN tq57np2286r 10 8 occurring occur VERB tq57np2286r 10 9 in in ADP tq57np2286r 10 10 mixed mixed ADJ tq57np2286r 10 11 halide halide NOUN tq57np2286r 10 12 lead lead NOUN tq57np2286r 10 13 perovskites perovskite NOUN tq57np2286r 10 14 ( ( PUNCT tq57np2286r 10 15 e.g. e.g. X tq57np2286r 10 16 , , PUNCT tq57np2286r 10 17 ch3nh3pbbrxi3 ch3nh3pbbrxi3 PROPN tq57np2286r 10 18 – – NOUN tq57np2286r 10 19 x x PROPN tq57np2286r 10 20 ) ) PUNCT tq57np2286r 10 21 gives give VERB tq57np2286r 10 22 rise rise NOUN tq57np2286r 10 23 to to ADP tq57np2286r 10 24 the the DET tq57np2286r 10 25 concerns concern NOUN tq57np2286r 10 26 regarding regard VERB tq57np2286r 10 27 the the DET tq57np2286r 10 28 long long ADJ tq57np2286r 10 29 - - PUNCT tq57np2286r 10 30 term term NOUN tq57np2286r 10 31 applications application NOUN tq57np2286r 10 32 . . PUNCT tq57np2286r 11 1 herein herein ADV tq57np2286r 11 2 , , PUNCT tq57np2286r 11 3 the the DET tq57np2286r 11 4 impact impact NOUN tq57np2286r 11 5 of of ADP tq57np2286r 11 6 light light NOUN tq57np2286r 11 7 on on ADP tq57np2286r 11 8 mixed mixed ADJ tq57np2286r 11 9 halide halide NOUN tq57np2286r 11 10 hybrid hybrid NOUN tq57np2286r 11 11 perovskite perovskite NOUN tq57np2286r 11 12 films film NOUN tq57np2286r 11 13 was be AUX tq57np2286r 11 14 investigated investigate VERB tq57np2286r 11 15 by by ADP tq57np2286r 11 16 exposing expose VERB tq57np2286r 11 17 such such ADJ tq57np2286r 11 18 films film NOUN tq57np2286r 11 19 to to ADP tq57np2286r 11 20 continuous continuous ADJ tq57np2286r 11 21 laser laser NOUN tq57np2286r 11 22 irradiation irradiation NOUN tq57np2286r 11 23 . . PUNCT tq57np2286r 12 1 it it PRON tq57np2286r 12 2 turns turn VERB tq57np2286r 12 3 out out ADP tq57np2286r 12 4 that that SCONJ tq57np2286r 12 5 under under ADP tq57np2286r 12 6 illumination illumination NOUN tq57np2286r 12 7 the the DET tq57np2286r 12 8 generated generate VERB tq57np2286r 12 9 iodide iodide NOUN tq57np2286r 12 10 - - PUNCT tq57np2286r 12 11 rich rich ADJ tq57np2286r 12 12 perovskite perovskite ADJ tq57np2286r 12 13 species specie NOUN tq57np2286r 12 14 further far ADV tq57np2286r 12 15 decompose decompose VERB tq57np2286r 12 16 into into ADP tq57np2286r 12 17 metallic metallic ADJ tq57np2286r 12 18 lead lead NOUN tq57np2286r 12 19 ( ( PUNCT tq57np2286r 12 20 pb0 pb0 NOUN tq57np2286r 12 21 ) ) PUNCT tq57np2286r 12 22 . . PUNCT tq57np2286r 13 1 the the DET tq57np2286r 13 2 chemical chemical ADJ tq57np2286r 13 3 changes change NOUN tq57np2286r 13 4 in in ADP tq57np2286r 13 5 decomposed decompose VERB tq57np2286r 13 6 films film NOUN tq57np2286r 13 7 were be AUX tq57np2286r 13 8 found find VERB tq57np2286r 13 9 to to PART tq57np2286r 13 10 cause cause VERB tq57np2286r 13 11 an an DET tq57np2286r 13 12 irreversible irreversible ADJ tq57np2286r 13 13 shift shift NOUN tq57np2286r 13 14 of of ADP tq57np2286r 13 15 absorption absorption NOUN tq57np2286r 13 16 band band NOUN tq57np2286r 13 17 edge edge NOUN tq57np2286r 13 18 and and CCONJ tq57np2286r 13 19 a a DET tq57np2286r 13 20 significant significant ADJ tq57np2286r 13 21 change change NOUN tq57np2286r 13 22 in in ADP tq57np2286r 13 23 film film NOUN tq57np2286r 13 24 morphology.in morphology.in NUM tq57np2286r 13 25 addition addition NOUN tq57np2286r 13 26 , , PUNCT tq57np2286r 13 27 the the DET tq57np2286r 13 28 structural structural ADJ tq57np2286r 13 29 transformations transformation NOUN tq57np2286r 13 30 of of ADP tq57np2286r 13 31 hybrid hybrid ADJ tq57np2286r 13 32 perovskites perovskite NOUN tq57np2286r 13 33 are be AUX tq57np2286r 13 34 facilitated facilitate VERB tq57np2286r 13 35 by by ADP tq57np2286r 13 36 interactions interaction NOUN tq57np2286r 13 37 with with ADP tq57np2286r 13 38 polar polar ADJ tq57np2286r 13 39 molecules molecule NOUN tq57np2286r 13 40 ( ( PUNCT tq57np2286r 13 41 h2o h2o PROPN tq57np2286r 13 42 and and CCONJ tq57np2286r 13 43 nh3 nh3 NOUN tq57np2286r 13 44 ) ) PUNCT tq57np2286r 13 45 . . PUNCT tq57np2286r 14 1 exposure exposure NOUN tq57np2286r 14 2 to to ADP tq57np2286r 14 3 nh3 nh3 DET tq57np2286r 14 4 gas gas NOUN tq57np2286r 14 5 can can AUX tq57np2286r 14 6 significantly significantly ADV tq57np2286r 14 7 change change VERB tq57np2286r 14 8 the the DET tq57np2286r 14 9 optical optical ADJ tq57np2286r 14 10 and and CCONJ tq57np2286r 14 11 electronic electronic ADJ tq57np2286r 14 12 properties property NOUN tq57np2286r 14 13 of of ADP tq57np2286r 14 14 ch3nh3pbi3 ch3nh3pbi3 ADJ tq57np2286r 14 15 perovskites perovskite NOUN tq57np2286r 14 16 , , PUNCT tq57np2286r 14 17 which which PRON tq57np2286r 14 18 can can AUX tq57np2286r 14 19 be be AUX tq57np2286r 14 20 explored explore VERB tq57np2286r 14 21 for for ADP tq57np2286r 14 22 gas gas NOUN tq57np2286r 14 23 - - PUNCT tq57np2286r 14 24 sensing sense VERB tq57np2286r 14 25 applications application NOUN tq57np2286r 14 26 . . PUNCT tq57np2286r 15 1 however however ADV tq57np2286r 15 2 , , PUNCT tq57np2286r 15 3 limited limited ADJ tq57np2286r 15 4 understanding understanding NOUN tq57np2286r 15 5 of of ADP tq57np2286r 15 6 the the DET tq57np2286r 15 7 processes process NOUN tq57np2286r 15 8 by by ADP tq57np2286r 15 9 which which PRON tq57np2286r 15 10 perovskites perovskite NOUN tq57np2286r 15 11 interact interact VERB tq57np2286r 15 12 with with ADP tq57np2286r 15 13 nh3 nh3 X tq57np2286r 15 14 further far ADV tq57np2286r 15 15 hinders hinder VERB tq57np2286r 15 16 the the DET tq57np2286r 15 17 improvement improvement NOUN tq57np2286r 15 18 and and CCONJ tq57np2286r 15 19 full full ADJ tq57np2286r 15 20 use use NOUN tq57np2286r 15 21 of of ADP tq57np2286r 15 22 the the DET tq57np2286r 15 23 unique unique ADJ tq57np2286r 15 24 properties property NOUN tq57np2286r 15 25 of of ADP tq57np2286r 15 26 these these DET tq57np2286r 15 27 materials material NOUN tq57np2286r 15 28 . . PUNCT tq57np2286r 16 1 thus thus ADV tq57np2286r 16 2 , , PUNCT tq57np2286r 16 3 the the DET tq57np2286r 16 4 effects effect NOUN tq57np2286r 16 5 of of ADP tq57np2286r 16 6 ammonia ammonia NOUN tq57np2286r 16 7 on on ADP tq57np2286r 16 8 ch3nh3pbi3 ch3nh3pbi3 PROPN tq57np2286r 16 9 were be AUX tq57np2286r 16 10 investigated investigate VERB tq57np2286r 16 11 by by ADP tq57np2286r 16 12 exposing expose VERB tq57np2286r 16 13 perovskite perovskite ADJ tq57np2286r 16 14 films film NOUN tq57np2286r 16 15 to to ADP tq57np2286r 16 16 an an DET tq57np2286r 16 17 nh3 nh3 NOUN tq57np2286r 16 18 atmosphere atmosphere NOUN tq57np2286r 16 19 . . PUNCT tq57np2286r 17 1 spectroscopic spectroscopic ADJ tq57np2286r 17 2 analyses analysis NOUN tq57np2286r 17 3 indicated indicate VERB tq57np2286r 17 4 that that SCONJ tq57np2286r 17 5 ammonium ammonium NOUN tq57np2286r 17 6 cations cation NOUN tq57np2286r 17 7 ( ( PUNCT tq57np2286r 17 8 nh4 nh4 NOUN tq57np2286r 17 9 + + ADV tq57np2286r 17 10 ) ) PUNCT tq57np2286r 17 11 replaced replace VERB tq57np2286r 17 12 the the DET tq57np2286r 17 13 methylammonium methylammonium NOUN tq57np2286r 17 14 cations cation NOUN tq57np2286r 17 15 ( ( PUNCT tq57np2286r 17 16 ch3nh3 ch3nh3 PUNCT tq57np2286r 17 17 + + NOUN tq57np2286r 17 18 ) ) PUNCT tq57np2286r 17 19 in in ADP tq57np2286r 17 20 the the DET tq57np2286r 17 21 perovskite perovskite PROPN tq57np2286r 17 22 crystal crystal NOUN tq57np2286r 17 23 , , PUNCT tq57np2286r 17 24 thereby thereby ADV tq57np2286r 17 25 resulting result VERB tq57np2286r 17 26 in in ADP tq57np2286r 17 27 the the DET tq57np2286r 17 28 formation formation NOUN tq57np2286r 17 29 of of ADP tq57np2286r 17 30 nh4pbi3 nh4pbi3 NOUN tq57np2286r 17 31 . . PUNCT tq57np2286r 18 1 nonetheless nonetheless ADV tq57np2286r 18 2 , , PUNCT tq57np2286r 18 3 the the DET tq57np2286r 18 4 introduction introduction NOUN tq57np2286r 18 5 of of ADP tq57np2286r 18 6 ch3nh2gas ch3nh2gas PROPN tq57np2286r 18 7 to to ADP tq57np2286r 18 8 the the DET tq57np2286r 18 9 formed formed ADJ tq57np2286r 18 10 nh4pbi3 nh4pbi3 NOUN tq57np2286r 18 11 converted convert VERB tq57np2286r 18 12 it it PRON tq57np2286r 18 13 back back ADV tq57np2286r 18 14 to to ADP tq57np2286r 18 15 ch3nh3pbi3 ch3nh3pbi3 PROPN tq57np2286r 18 16 , , PUNCT tq57np2286r 18 17 proving prove VERB tq57np2286r 18 18 the the DET tq57np2286r 18 19 reversibility reversibility NOUN tq57np2286r 18 20 of of ADP tq57np2286r 18 21 these these DET tq57np2286r 18 22 cation cation NOUN tq57np2286r 18 23 exchange exchange NOUN tq57np2286r 18 24 reactions reaction NOUN tq57np2286r 18 25 . . PUNCT tq57np2286r 19 1 lastly lastly ADV tq57np2286r 19 2 , , PUNCT tq57np2286r 19 3 this this DET tq57np2286r 19 4 reversible reversible ADJ tq57np2286r 19 5 cation cation NOUN tq57np2286r 19 6 - - PUNCT tq57np2286r 19 7 exchange exchange NOUN tq57np2286r 19 8 method method NOUN tq57np2286r 19 9 was be AUX tq57np2286r 19 10 employed employ VERB tq57np2286r 19 11 to to PART tq57np2286r 19 12 tune tune VERB tq57np2286r 19 13 the the DET tq57np2286r 19 14 optical optical ADJ tq57np2286r 19 15 and and CCONJ tq57np2286r 19 16 structural structural ADJ tq57np2286r 19 17 properties property NOUN tq57np2286r 19 18 of of ADP tq57np2286r 19 19 colloidal colloidal ADJ tq57np2286r 19 20 perovskite perovskite NOUN tq57np2286r 19 21 nanocrystals nanocrystal NOUN tq57np2286r 19 22 ( ( PUNCT tq57np2286r 19 23 ncs ncs X tq57np2286r 19 24 ) ) PUNCT tq57np2286r 19 25 . . PUNCT tq57np2286r 20 1 the the DET tq57np2286r 20 2 photoluminescence photoluminescence NOUN tq57np2286r 20 3 of of ADP tq57np2286r 20 4 the the DET tq57np2286r 20 5 3d 3d PROPN tq57np2286r 20 6 ch3nh3pbbr3 ch3nh3pbbr3 PROPN tq57np2286r 20 7 ncs ncs PROPN tq57np2286r 20 8 changes change NOUN tq57np2286r 20 9 from from ADP tq57np2286r 20 10 green green PROPN tq57np2286r 20 11 to to ADP tq57np2286r 20 12 violet violet NOUN tq57np2286r 20 13 by by ADP tq57np2286r 20 14 adding add VERB tq57np2286r 20 15 phenethylammonium phenethylammonium NOUN tq57np2286r 20 16 cation cation NOUN tq57np2286r 20 17 ( ( PUNCT tq57np2286r 20 18 pea+ pea+ PROPN tq57np2286r 20 19 ) ) PUNCT tq57np2286r 20 20 . . PUNCT tq57np2286r 21 1 in in ADP tq57np2286r 21 2 contrast contrast NOUN tq57np2286r 21 3 , , PUNCT tq57np2286r 21 4 the the DET tq57np2286r 21 5 photoluminescence photoluminescence NOUN tq57np2286r 21 6 of of ADP tq57np2286r 21 7 the the DET tq57np2286r 21 8 2d 2d NOUN tq57np2286r 21 9 oca2pbbr4 oca2pbbr4 PROPN tq57np2286r 21 10 perovskite perovskite PROPN tq57np2286r 21 11 ncs ncs PROPN tq57np2286r 21 12 turns turn VERB tq57np2286r 21 13 from from ADP tq57np2286r 21 14 violet violet PROPN tq57np2286r 21 15 to to AUX tq57np2286r 21 16 green green ADJ tq57np2286r 21 17 upon upon SCONJ tq57np2286r 21 18 introducing introduce VERB tq57np2286r 21 19 methylammonium methylammonium NOUN tq57np2286r 21 20 cation cation NOUN tq57np2286r 21 21 ( ( PUNCT tq57np2286r 21 22 ch3nh3 ch3nh3 X tq57np2286r 21 23 + + NOUN tq57np2286r 21 24 ) ) PUNCT tq57np2286r 21 25 . . PUNCT tq57np2286r 22 1 these these DET tq57np2286r 22 2 optical optical ADJ tq57np2286r 22 3 changes change NOUN tq57np2286r 22 4 are be AUX tq57np2286r 22 5 attributed attribute VERB tq57np2286r 22 6 to to ADP tq57np2286r 22 7 the the DET tq57np2286r 22 8 reversible reversible ADJ tq57np2286r 22 9 structural structural ADJ tq57np2286r 22 10 transformation transformation NOUN tq57np2286r 22 11 of of ADP tq57np2286r 22 12 perovskite perovskite PROPN tq57np2286r 22 13 ncs ncs PROPN tq57np2286r 22 14 between between ADP tq57np2286r 22 15 three three NUM tq57np2286r 22 16 - - PUNCT tq57np2286r 22 17 dimensional dimensional ADJ tq57np2286r 22 18 ( ( PUNCT tq57np2286r 22 19 3d 3d NOUN tq57np2286r 22 20 ) ) PUNCT tq57np2286r 22 21 and and CCONJ tq57np2286r 22 22 two two NUM tq57np2286r 22 23 - - PUNCT tq57np2286r 22 24 dimensional dimensional ADJ tq57np2286r 22 25 ( ( PUNCT tq57np2286r 22 26 2d 2d NOUN tq57np2286r 22 27 ) ) PUNCT tq57np2286r 22 28 layered layer VERB tq57np2286r 22 29 crystalline crystalline NOUN tq57np2286r 22 30 forms form NOUN tq57np2286r 22 31 through through ADP tq57np2286r 22 32 cation cation NOUN tq57np2286r 22 33 exchange exchange NOUN tq57np2286r 22 34 . . PUNCT tq57np2286r 23 1 the the DET tq57np2286r 23 2 reversible reversible ADJ tq57np2286r 23 3 cation cation NOUN tq57np2286r 23 4 exchange exchange NOUN tq57np2286r 23 5 process process NOUN tq57np2286r 23 6 opens open VERB tq57np2286r 23 7 up up ADP tq57np2286r 23 8 new new ADJ tq57np2286r 23 9 possibilities possibility NOUN tq57np2286r 23 10 of of ADP tq57np2286r 23 11 using use VERB tq57np2286r 23 12 post post ADJ tq57np2286r 23 13 - - ADJ tq57np2286r 23 14 synthetic synthetic ADJ tq57np2286r 23 15 cation cation NOUN tq57np2286r 23 16 interaction interaction NOUN tq57np2286r 23 17 to to PART tq57np2286r 23 18 flexibly flexibly ADV tq57np2286r 23 19 and and CCONJ tq57np2286r 23 20 rationally rationally ADV tq57np2286r 23 21 tune tune VERB tq57np2286r 23 22 the the DET tq57np2286r 23 23 optical optical ADJ tq57np2286r 23 24 and and CCONJ tq57np2286r 23 25 structural structural ADJ tq57np2286r 23 26 properties property NOUN tq57np2286r 23 27 of of ADP tq57np2286r 23 28 perovskite perovskite ADJ tq57np2286r 23 29 materials material NOUN tq57np2286r 23 30 , , PUNCT tq57np2286r 23 31 bringing bring VERB tq57np2286r 23 32 greater great ADJ tq57np2286r 23 33 tailored tailor VERB tq57np2286r 23 34 functionalities functionality NOUN tq57np2286r 23 35 to to ADP tq57np2286r 23 36 these these DET tq57np2286r 23 37 materials material NOUN tq57np2286r 23 38 . . PUNCT