Introducing paired electric dipole layers for efficient and reproducible perovskite solar cells

被引：92

作者：

Lee, Jong-Hoon ^{[1
,2
]}

Kim, Junghwan ^{[2
,7
]}

Kim, Geunjin ^{[2
]}

Shin, Dongguen ^{[3
,4
]}

Jeong, Song Yi ^{[2
]}

Lee, Jinho ^{[1
,2
]}

Hong, Soonil ^{[1
,2
]}

Choi, Jin Woo ^{[5
]}

Lee, Chang-Lyoul ^{[5
]}

Kim, Heejoo ^{[6
]}

Yi, Yeonjin ^{[3
,4
]}

Lee, Kwanghee ^{[1
,2
]}

机构：

[1] Gwangju Inst Sci & Technol, Sch Mat Sci & Engn, Gwangju 61005, South Korea

[2] Gwangju Inst Sci & Technol, Res Inst Solar & Sustainable Energies, Heeger Ctr Adv Mat, Gwangju 61005, South Korea

[3] Yonsei Univ, Inst Phys, Seoul 03722, South Korea

[4] Yonsei Univ, Appl Phys & Waals Mat Res Ctr, Seoul 03722, South Korea

[5] Gwangju Inst Sci & Technol, Adv Photon Res Inst, Gwangju 61005, South Korea

[6] Gwangju Inst Sci & Technol, Inst Integrated Technol, Gwangju 61005, South Korea

[7] Univ Toronto, Dept Elect & Comp Engn, 10 Kings Coll Rd, Toronto, ON M5S 3G4, Canada

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2018年 / 11卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

FILL FACTOR; PERFORMANCE; CRYSTALLIZATION; RECOMBINATION; ENHANCEMENT; PASSIVATION; VOLTAGE;

D O I：

10.1039/c8ee00162f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Elimination of charge trapping at defects is highly challenging for poly-crystalline organometal halide perovskites. Here, we report a new architecture for reinforcing the built-in electric field (E-in) across the photoactive layer with a pair of strong electric dipole layers (EDLs). The paired EDLs significantly intensify the E-in across the perovskite layer, resulting in suppressed charge trapping of photogenerated charges. As a result, our low-temperature processed P-I-N planar PeSC devices using the paired EDLs exhibit a higher power conversion efficiency (eta(max) similar to 19.4%) and a smaller device-to-device variation with a standard deviation (S. D.) of 0.70%, which far surpass those (eta(max) similar to 17.8%, S.D. similar to 1.1%) of the devices with typical charge transport layers.

引用

页码：1742 / 1751

页数：10

共 55 条

[1] Supramolecular Halogen Bond Passivation of Organic-Inorganic Halide Perovskite Solar Cells [J].