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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
Bai, Dongliang1,2; Zhang, Jingru1,2; Jin, Zhiwen1,2; Bian, Hui1,2; Wang, Kang1,2; Wang, Haoran1,2; Liang, Lei1,2; Wang, Qian1,2; Liu, Shengzhong Frank1,2,3,4
Source PublicationACS ENERGY LETTERS
2018-04-01
ISSN2380-8195
DOI10.1021/acsenergylett.8b00270
Volume3Issue:4Pages:970-978
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science
WOS KeywordELECTRON-TRANSPORT LAYER ; LEAD HALIDE PEROVSKITES ; PHOTOVOLTAIC PERFORMANCE ; STABILITY ; NANOCRYSTALS ; STABILIZATION ; ALPHA-CSPBI3 ; DEGRADATION ; ENHANCEMENT ; CRYSTALS
AbstractIt 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.
Language英语
WOS IDWOS:000430369600029
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/169171
Collection中国科学院大连化学物理研究所
Corresponding AuthorJin, Zhiwen; Wang, Qian; Liu, Shengzhong Frank
Affiliation1.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
Recommended Citation
GB/T 7714
Bai, Dongliang,Zhang, Jingru,Jin, Zhiwen,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 Bai, Dongliang.,Zhang, Jingru.,Jin, Zhiwen.,Bian, Hui.,Wang, Kang.,...&Liu, Shengzhong Frank.(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 Bai, Dongliang,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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