Investigating the feasibility of symmetric guanidinium based plumbate perovskites in prototype solar cell devices

被引：17

作者：

Kulkarni, Sneha A. ^{[1
]}

Baikie, Tom ^{[1
]}

Muduli, Subas ^{[1
]}

Potter, Rob ^{[2
]}

Chen, Shi ^{[4
]}

Yanan, Fanan ^{[3
]}

Bishop, Peter ^{[2
]}

Lim, Swee Sien ^{[4
]}

Sum, Tze Chien ^{[4
]}

Mathews, Nripan ^{[1
,3
]}

White, Tim J. ^{[3
]}

机构：

[1] Nanyang Technol Univ, Energy Res Inst NTU ERI N, Singapore 637553, Singapore

[2] Johnson Matthey Technol Ctr, Catalyst & Mat Dept, Reading RG4 9NH, Berks, England

[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[4] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2017年 / 56卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

ORGANOMETAL HALIDE PEROVSKITES; PHASE-TRANSITIONS;

D O I：

10.7567/JJAP.56.08MC05

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this work we have studied the feasibility of highly symmetric guanidinium (GA; CH6N3+) cation in perovskite based solar cells. It is an alternative to the methyl ammonium (MA; CH3NH3+) or formamidinium (FA; CH(NH2)(2+)) ions commonly utilized in the perovskite solar cells, may bring additional advantages due to its triad rotational symmetry and zero dipole moment (mu). We noticed that due to steric factors, GA preferably forms two-dimensional (2D) layer, where GA(2)PbI(4) is favored monoclinic structure (E-g = 2.5 eV) and the obtained device efficiency is eta = 0.45%. This study provides a guideline for designing guanidinium based perovskite absorbers for solar cell devices. In addition, through further compositional engineering with mixed organic cations using GA may enhance the device performance. (C) 2017 The Japan Society of Applied Physics

引用

页数：6

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