Iodide management in formamidinium-lead-halide-based perovskite layers for efficient solar cells

被引：4811

作者：

Yang, Woon Seok ^{[1
,2
]}

Park, Byung-Wook ^{[1
,2
]}

Jung, Eui Hyuk ^{[3
]}

Jeon, Nam Joong ^{[3
]}

Kim, Young Chan ^{[3
]}

Lee, Dong Uk ^{[4
]}

Shin, Seong Sik ^{[3
]}

Seo, Jangwon ^{[3
]}

Kim, Eun Kyu ^{[5
,6
]}

Noh, Jun Hong ^{[3
,7
]}

Seok, Sang Il ^{[1
,2
,3
]}

机构：

[1] Ulsan Natl Inst Sci & Technol, Sch Nat Sci, Perovtron Res Ctr, 50 UNIST Gil, Ulsan 44919, South Korea

[2] Ulsan Natl Inst Sci & Technol, Sch Energy & Chem Engn, 50 UNIST Gil, Ulsan 44919, South Korea

[3] Korea Res Inst Chem Technol, Div Adv Mat, 141 Gajeong Ro, Daejeon 34114, South Korea

[4] SK Hynix Inc, NAND Prod Engn Grp, Icheon 17336, South Korea

[5] Hanyang Univ, Dept Phys, Seoul 04763, South Korea

[6] Hanyang Univ, Quantum Funct Res Lab, Seoul 04763, South Korea

[7] Korea Univ, Sch Civil Environm & Architectural Engn, Seoul 136713, South Korea

来源：

SCIENCE | 2017年 / 356卷 / 6345期

基金：

新加坡国家研究基金会;

关键词：

CARRIER DYNAMICS; THIN-FILMS; PERFORMANCE; PASSIVATION; QUALITY;

D O I：

10.1126/science.aan2301

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The formation of a dense and uniform thin layer on the substrates is crucial for the fabrication of high-performance perovskite solar cells (PSCs) containing formamidinium with multiple cations and mixed halide anions. The concentration of defect states, which reduce a cell's performance by decreasing the open-circuit voltage and short-circuit current density, needs to be as low as possible. We show that the introduction of additional iodide ions into the organic cation solution, which are used to form the perovskite layers through an intramolecular exchanging process, decreases the concentration of deep-level defects. The defect-engineered thin perovskite layers enable the fabrication of PSCs with a certified power conversion efficiency of 22.1% in small cells and 19.7% in 1-square-centimeter cells.

引用

页码：1376 / +

页数：4

共 34 条

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