CH3NH3PbI3 crystal orientation and photovoltaic performance of planar heterojunction perovskite solar cells

被引：40

作者：

Bae, Seunghwan ^{[1
]}

Park, Joon-Suh ^{[2
]}

Han, Il Ki ^{[2
]}

Shin, Tae Joo ^{[3
,4
]}

Jo, Won Ho ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, 1 Gwanak Ro, Seoul 08826, South Korea

[2] Korea Inst Sci & Technol, Nanophoton Res Ctr, 5 Hwarang Ro 14 Gil, Seoul 02792, South Korea

[3] Ulsan Natl Inst Sci & Technol, UNIST Cent Res Facil, 50 UNIST Gil, Ulsan 44919, South Korea

[4] Ulsan Natl Inst Sci & Technol, Sch Natl Sci, 50 UNIST Gil, Ulsan 44919, South Korea

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2017年 / 160卷

关键词：

CH3NH3PbI3; Perovskite solar cells; Crystal orientation; Charge transfer; ELECTRONIC-PROPERTIES; HALIDE; MOBILITIES; TRANSPORT; LENGTHS; MORPHOLOGY; HYSTERESIS; ENERGY; LAYERS; FILMS;

D O I：

10.1016/j.solmat.2016.10.019

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The effect of crystal orientation of CH3NH3PbI3 on photovoltaic properties has rarely been studied due to the lack of method to fabricate perovskite films with well-controlled crystal orientation in specific direction. Here, we have controlled the orientation of CH3NH3PbI3 crystal by changing organic precursors (CH3NH3I and CH3NH3CI) and successfully fabricated highly oriented CH3NH3PbI3 crystals with two different orientations to the substrate. When we investigated the effect of crystal orientation on photovoltaic performance using the films with two different crystal orientations, we have realized that the crystal orientation of perovskite is directly related to power conversion efficiency (PCE). The PCE difference due to different crystal orientation is interpreted by the charge transfer lifetime. Faster charge transfer from perovskite layer to charge transport layer exhibits higher J(SC) and PCE.

引用

页码：77 / 84

页数：8

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