Oriented Grains with Preferred Low-Angle Grain Boundaries in Halide Perovskite Films by Pressure-Induced Crystallization

被引：82

作者：

Kim, Wanjung ^{[1
,6
]}

Jung, Myung Sun ^{[1
]}

Lee, Seonhee ^{[2
]}

Choi, Yung Ji ^{[3
,4
]}

Kim, Jung Kyu ^{[5
]}

Chai, Sung Uk ^{[1
]}

Kim, Wook

Choi, Dae-Geun ^{[7
]}

Ahn, Hyungju ^{[8
]}

Cho, Jeong Ho ^{[9
]}

Choi, Dukhyun ^{[6
]}

Shin, Hyunjung ^{[2
]}

Kim, Dongho ^{[3
,4
]}

Park, Jong Hyeok ^{[1
]}

机构：

[1] Yonsei Univ, Dept Chem & Biomol Engn, 50 Yonsei Ro, Seoul 120749, South Korea

[2] Sungkyunkwan Univ, Dept Energy Sci, Suwon, South Korea

[3] Yonsei Univ, Spect Lab Funct Elect Syst, 50 Yonsei Ro, Seoul 03722, South Korea

[4] Yonsei Univ, Dept Chem, 50 Yonsei Ro, Seoul 03722, South Korea

[5] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA

[6] Kyung Hee Univ, Dept Mech Engn, 1732 Deogyeong Daero, Yongin 17104, Gyeonggi Do, South Korea

[7] Korea Inst Machinery & Mat, Dept Nano Mfg Technol, Nanomech Syst Res Div, Daejon, South Korea

[8] POSTECH, Pohang Accelerator Lab, Dept Ind Technol Convergence Ctr, Pohang 37673, South Korea

[9] Sungkyunkwan Univ, Sch Chem Engn, SKKU Adv Inst Technol, Suwon, South Korea

来源：

ADVANCED ENERGY MATERIALS | 2018年 / 8卷 / 10期

基金：

新加坡国家研究基金会;

关键词：

close-packed grains; low-angle grain boundaries; perovskite solar cells; preferred-orientation; pressure-induced crystallization; ELECTRONIC-STRUCTURE; SINGLE-CRYSTALS; SOLAR-CELLS; EFFICIENCY; LENGTHS; GROWTH; BANDGAP; LAYER;

D O I：

10.1002/aenm.201702369

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：

A general methodology is reported to create organic-inorganic hybrid metal halide perovskite films with enlarged and preferred-orientation grains. Simply pressing polyurethane stamps with hexagonal nanodot arrays on partially dried perovskite intermediate films can cause pressure-induced perovskite crystallization. This pressure-induced crystallization allows to prepare highly efficient perovskite solar cells (PSCs) because the preferred-orientation and enlarged grains with low-angle grain boundaries in the perovskite films exhibit suppressed nonradiative recombination. Consequently, the photovoltaic response is dramatically improved by the uniaxial compression in both inverted-planar PSCs and normal PSCs, leading to power conversion efficiencies of 19.16%.

引用

页数：10

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