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Interstitial Mn2+-Driven High-Aspect-Ratio Grain Growth for Low-Trap-Density Microcrystalline Films for Record Efficiency CsPbl(2)Br Solar Cells

文献类型：期刊论文

作者Wang, Haoran1,2; Liu, Shengzhong Frank1,2,3,4; Wang, Qian1,2; Bai, Dongliang1,2; Zhang, Jingru1,2; Jin, Zhiwen1,2; Bian, Hui1,2; Wang, Kang1,2; Liang, Lei1,2
刊名ACS ENERGY LETTERS
出版日期2018-04-01
卷号3期号:4页码:970-978
ISSN号2380-8195
DOI10.1021/acsenergylett.8b00270
文献子类Article
英文摘要It is imperative to develop a large-aspect-ratio grain-based thin film with low trap density for high-performance inorganic perovskite CsPbI2Br solar cells. Herein, by using Mn2+ ion doping to modulate film growth, we achieved CsPbI2Br grains with aspect ratios as high as 8. It is found that Mn2+ ions insert into the interstices of the CsPbI2Br lattice during the growth process, leading to suppressed nucleation and a decreased growth rate. The combination aids in the achievement of larger CsPbI2Br crystalline grains for increased J(SC) values as high as 14.37 mA/cm(2) and FFs as large as 80.0%. Moreover, excess Mn2+ ions passivate the grain boundary and surface defects, resulting in effectively decreased recombination loss with improved hole extraction efficiency, which enhances the built-in electric field and hence increases V-OC to 1.172 V. As a result, the champion device achieves stabilized efficiency as high as 13.47%, improved by 13% compared with only 11.88% for the reference device.
WOS关键词ELECTRON-TRANSPORT LAYER ; LEAD HALIDE PEROVSKITES ; PHOTOVOLTAIC PERFORMANCE ; STABILITY ; NANOCRYSTALS ; STABILIZATION ; ALPHA-CSPBI3 ; DEGRADATION ; ENHANCEMENT ; CRYSTALS
WOS研究方向Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:000430369600029
出版者AMER CHEMICAL SOC
源URL[http://cas-ir.dicp.ac.cn/handle/321008/169170]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Liu, Shengzhong Frank; Wang, Qian; Jin, Zhiwen
作者单位1.Shaanxi Normal Univ, Shaanxi Engn Lab Adv Energy Technol, Key Lab Appl Surface & Colloid Chem, Minist Educ,Shaanxi Key Lab Adv Energy Devices, Xian 710119, Shaanxi, Peoples R China
2.Shaanxi Normal Univ, Sch Mat Sci & Engn, Xian 710119, Shaanxi, Peoples R China
3.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, IChEM, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Haoran,Liu, Shengzhong Frank,Wang, Qian,et al. Interstitial Mn2+-Driven High-Aspect-Ratio Grain Growth for Low-Trap-Density Microcrystalline Films for Record Efficiency CsPbl(2)Br Solar Cells[J]. ACS ENERGY LETTERS,2018,3(4):970-978.
APA Wang, Haoran.,Liu, Shengzhong Frank.,Wang, Qian.,Bai, Dongliang.,Zhang, Jingru.,...&Liang, Lei.(2018).Interstitial Mn2+-Driven High-Aspect-Ratio Grain Growth for Low-Trap-Density Microcrystalline Films for Record Efficiency CsPbl(2)Br Solar Cells.ACS ENERGY LETTERS,3(4),970-978.
MLA Wang, Haoran,et al."Interstitial Mn2+-Driven High-Aspect-Ratio Grain Growth for Low-Trap-Density Microcrystalline Films for Record Efficiency CsPbl(2)Br Solar Cells".ACS ENERGY LETTERS 3.4(2018):970-978.

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来源：大连化学物理研究所

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