Effect of Reaction Time on Morphology and Fluorescence Performance of CH3NH3PbBr3 Perovskite Crystals
WU Yihua1, HUANG Jing1, WU Di1, CHEN Zhongzhen1, LI Dan1,ZHU Zhigang1, SHI Weiheng1,2
1 School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209; 2 Department of Materials Science and Engineering, Drexel University, Philadelphia 19104
Abstract: Recently, organic-inorganic hybrid perovskites (CH3NH3PbX3, X=Cl, Br, I) have attracted tremendous interest owing to its application in many fields, particularly in solar cells. In this paper, the effect of reaction time on morphology and fluorescence performance of hot-injection synthesized CH3NH3PbBr3 perovskite crystals was investigated. The absorption spectroscopy, fluorescence spectroscopy, XRD, TEM, SEM were adopted to analyze the perovskite crystals. As the reaction time prolonging, the morphology changed from nanoparticles to nanoplatelets, and the size and thickness increased as well. Meanwhile, the absorption peak and the photoluminescence emission peak got blue-shifted. The perovskite crystals was found to achieve the highest photoluminescence quantum yield when the reaction time was controlled at 180 s.
1 Kazim S, Nazeeruddin M K, Gratzel M, et al. Perovskite as light harvester: A game change in photovoltaics[J]. Angew Chem Int Ed, 2014,53:2812. 2 Park N G. Methodologies for high efficiency perovskite solar cells[J]. Nano Converg, 2016,3:15. 3 Snaith H J. Perovskites: The emergence of a new era for low-cost, high-efficiency solar cells[J]. J Phys Chem Lett, 2013,4:3623. 4 Sadhanala A, Ahmad S, Zhao B, et al. Blue-green color tunable solution processable organolead chloride-bromide mixed halide perovskites for optoelectronic applications[J]. Nano Lett, 2015,15(9):6095. 5 Palazon F, Stasio F D, Akkerman Q A. Polymer-free films of inorganic halide perovskite nanocrystals as UV-to-white color-conversion layers in LEDs[J]. Chem Mater, 2016,28(9):2902. 6 Xing J, Liu X F, Zhang Q, et al. Vapor phase synthesis of organometal halide perovskite nanowires for tunable room-temperature nanolasers[J]. Nano Lett, 2015,15(7):4571. 7 Wang K, Gu Z, Liu S, et al. High-density and uniform lead halide perovskite nanolaser array on silicon[J]. J Phys Chem Lett, 2016,7(13):2549. 8 Dou L, Yang Y M, You J, et al. Solution-processed hybrid perovskite photodetectors with high detectivity[J]. Nat Commun, 2014,20(5):5404. 9 Sutherland B R, Johnston A K, Xu J. Sensitive, fast, and stable perovskite photodetectors exploiting interface engineering[J]. ACS Photon, 2015,2(8):1117. 10 Mitzi D B, Progress in inorganic chemistry[M]. New York:John Wiley & Sons, Inc.,1999. 11 Kojima A, Teshima K, Miyasaka T. Organometal halide perovskites as visible-light sensitizers for photovoltaic cells[J]. J Am Chem Soc, 2009,131:6050. 12 Noh J H, Im S H, Seok S I. Chemical management for colorful, efficient, and stable inorganic-organic hybrid nanostructured solar cells[J]. Nano Lett, 2013,13:1764. 13 Lee M M, Teuscher J, Snaith H J. Efficient hybrid solar cells based on meso-superstructured organometal halide perovskites[J]. Science, 2012,338:643. 14 Schmidt L C, Galian R E, Perez-Prieto J, et al. Nontemplate synthesis of CH3NH3PbBr3 perovskite nanoparticles[J]. J Am Chem Soc, 2014,126:850. 15 Tyagi P, Arveson S M, Tisdale W A. Colloidal organohalide perovskite nanoplatelets exhibiting quantum confinement[J]. J Phys Chem Lett, 2015,6:1911. 16 Sichert J A, Tong Y, Mutz N. Quantum size effect organometal halide perovskite nanoplatelets[J]. Nano Lett, 2015,15:6521.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2017, Vol. 31 
