A Ternary Solvent Method for Large-Sized Two-Dimensional Perovskites

被引：89

作者：

Chen, Junnian ^{[1
]}

Gan, Lin ^{[1
]}

Zhuge, Fuwei ^{[1
]}

Li, Huiqiao ^{[1
]}

Song, Jizhong ^{[2
]}

Zeng, Haibo ^{[2
]}

Zhai, Tianyou ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Sch Mat Sci & Engn, Wuhan 430074, Peoples R China

[2] Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, Inst Optoelect & Nanomat, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Jiangsu, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2017年 / 56卷 / 09期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

crystal growth; ternary solvents; perovskites; surface chemistry; synthetic methods; LIGHT-EMITTING-DIODES; HYBRID PEROVSKITES; OPTICAL-PROPERTIES; SOLAR-CELL; GROWTH; CRYSTAL; ELECTROLUMINESCENCE; STABILITY; LAYERS;

D O I：

10.1002/anie.201611794

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Recent reports demonstrate that a two-dimensional (2D) structural characteristic can endow perovskites with both remarkable photoelectric conversion efficiency and high stability, but the synthesis of ultrathin 2D perovskites with large sizes by facile solution methods is still a challenge. Reported herein is the controlled growth of 2D (C4H9NH3)(2)PbBr4 perovskites by a chlorobenzene-dimethylformide-acetonitrile ternary solvent method. The critical factors, including solvent volume ratio, crystallization temperature, and solvent polarity on the growth dynamics were systematically studied. Under optimum reaction condition, 2D (C4H9NH3)(2)PbBr4 perovskites, with the largest lateral dimension of up to 40m and smallest thickness down to a few nanometers, were fabricated. Furthermore, various iodine doped 2D (C4H9NH3)(2)PbBrxI4-x perovskites were accessed to tune the optical properties rationally.

引用

页码：2390 / 2394

页数：5

共 32 条

[1]

[Anonymous], 2014, ANGEW CHEM, V126, P11414

[2]

[Anonymous], 2005, ANGEW CHEM, V117, P3282

[3]

Ashcroft N W., 2003, Solid State Physics

[4] TOWARD AN ABINITIO DERIVATION OF CRYSTAL MORPHOLOGY [J].