Addition of Monovalent Silver Cations to CH3NH3PbBr3 Produces Crystallographically Oriented Perovskite Thin Films

被引：10

作者：

Siegler, Timothy D. ^{[1
,2
]}

Zhang, Yangning ^{[1
,2
]}

Dolocan, Andrei ^{[2
]}

Reimnitz, Lauren C. ^{[1
,2
]}

Torabi, Aida ^{[4
]}

Abney, Michael K. ^{[1
,2
]}

Choi, Junho ^{[3
]}

Cossio, Gabriel ^{[5
]}

Houck, Daniel W. ^{[1
,2
]}

Yu, Edward T. ^{[2
,5
]}

Li, Xiaoqin ^{[2
,3
]}

Harvey, Taylor B. ^{[4
]}

Milliron, Delia J. ^{[1
,2
]}

Korgel, Brian A. ^{[1
,2
]}

机构：

[1] Univ Texas Austin, McKetta Dept Chem Engn, Complex Quantum Syst, Austin, TX 78712 USA

[2] Univ Texas Austin, Texas Mat Inst, Complex Quantum Syst, Austin, TX 78712 USA

[3] Univ Texas Austin, Dept Phys, Complex Quantum Syst, Austin, TX 78712 USA

[4] Texas A&M Univ Central Texas, Dept Sci & Math, Killeen, TX 76549 USA

[5] Univ Texas Austin, Dept Elect & Comp Engn, Microelect Res Ctr, Austin, TX 78758 USA

来源：

ACS APPLIED ENERGY MATERIALS | 2019年 / 2卷 / 08期

关键词：

perovskite; methylammonium lead bromide (MAPBr); crystallographic texture; silver doping; surface segregation; perovskite photovoltaics; photoluminescence; POWER CONVERSION EFFICIENCY; SOLAR-CELLS; SINGLE-CRYSTAL; HALIDE PEROVSKITES; CRYSTALLIZATION; NANOCRYSTALS; DEGRADATION; PASSIVATION; PERFORMANCE; STABILITY;

D O I：

10.1021/acsaem.9b01298

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The incorporation of monovalent silver (Ag+) cations into methylammonium lead bromide (CH3NH3PbBr3) perovskite films leads to a strongly preferred (001) crystallographic orientation on a wide variety of substrates, ranging from glass to mesoporous TiO2. CH3NH3PbBr3 films deposited without Ag+ exhibit only a weakly preferred (011) orientation. Compositional maps and depth profiles from time-of-flight secondary ion mass spectrometry (TOF-SIMS) reveal Ag+ segregated to grain boundaries and interfaces. In photovoltaic devices (PVs), addition of Ag+ to MAPBr films resulted in poorer device performance, most likely because of the observed Ag+ segregation in the films.

引用

页码：6087 / 6096

页数：19

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