Photo-oxidative degradation of methylammonium lead iodide perovskite: mechanism and protection
文献类型：期刊论文
| 作者 | Ouyang, Yixin1; Li, Yajuan2; Zhu, Pengchen3; Li, Qiang1; Gao, Yuan3; Tong, Jianyu4; Shi, Li1; Zhou, Qionghua1; Ling, Chongyi1; Chen, Qian1 |
| 刊名 | Journal of materials chemistry a
 |
| 出版日期 | 2019-02-07 |
| 卷号 | 7期号:5页码:2275-2282 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c8ta12193a |
| 通讯作者 | Deng, weiqiao(dengwq@dicp.ac.cn) ; Wang, jinlan(jlwang@seu.edu.cn) |
| 英文摘要 | Although the power conversion efficiency of perovskite solar cells has exceeded 23%, the poor ambient stability of organic-inorganic halide perovskites poses a challenge for their commercialization. comprehensive understanding of the underlying degradation mechanisms is a crucial step to seek approaches that can effectively suppress the degradation of perovskites. herein, on the basis of extensive first-principles calculations, a three-step photo-oxidative degradation mechanism of mapbi(3)d at the atomic level is revealed. we find that, in a dry ambient environment, the photo-generated superoxide anions (o-2(-)) first lead to fast surface oxidation. however, further oxidation of the perovskite interior is hindered by the solid oxidation product. the fresh water produced in surface oxidation leads to the hydration of the inner perovskite and eventual breakage of the mapbi(3) lattice. we devise a practical strategy for protecting mapbi(3) from photo-induced decomposition by anchoring hydrophobic 2-(4-fluorophenyl)propan-2-amine on the surface of mapbi(3). the surface modification significantly retards the photo-induced decomposition. |
| WOS关键词 | INITIO MOLECULAR-DYNAMICS ; HALIDE PEROVSKITES ; SOLAR-CELLS ; AB-INITIO ; PHOTOVOLTAIC EFFICIENCY ; ELECTRONIC-STRUCTURE ; HIGH-PERFORMANCE ; ENERGY ; OXYGEN ; CH(3)NH(3)PBL(3) |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| WOS类目 | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000457546000035 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2372824 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Deng, Weiqiao; Wang, Jinlan |
| 作者单位 | 1.Southeast Univ, Sch Phys, Nanjing 211189, Jiangsu, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 3.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Jiangsu Key Lab Artificial Funct Mat, Natl Lab Solid State Microstruct,Coll Engn & Appl, Nanjing 210093, Jiangsu, Peoples R China 4.Nanjing Univ, Coll Engn & Appl Sci, Collaborat Innovat Ctr Adv Microstruct, Nanjing Natl Lab Microstruct,Dept Biomed Engn, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ouyang, Yixin,Li, Yajuan,Zhu, Pengchen,et al. Photo-oxidative degradation of methylammonium lead iodide perovskite: mechanism and protection[J]. Journal of materials chemistry a,2019,7(5):2275-2282. |
| APA | Ouyang, Yixin.,Li, Yajuan.,Zhu, Pengchen.,Li, Qiang.,Gao, Yuan.,...&Wang, Jinlan.(2019).Photo-oxidative degradation of methylammonium lead iodide perovskite: mechanism and protection.Journal of materials chemistry a,7(5),2275-2282. |
| MLA | Ouyang, Yixin,et al."Photo-oxidative degradation of methylammonium lead iodide perovskite: mechanism and protection".Journal of materials chemistry a 7.5(2019):2275-2282. |
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来源：大连化学物理研究所
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