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Lattice reconstruction of La-incorporated CsPbI2Br with suppressed phase transition for air-processed all-inorganic perovskite solar cells
Chen, SL; Zhang, TJ; Liu, XL; Qiao, JL; Peng, L; Wang, J; Liu, YS; Yang, TY; Lin, J
2020
Source PublicationJOURNAL OF MATERIALS CHEMISTRY C
ISSN2050-7526
Volume8Issue:10Pages:3351-3358
Subtype期刊论文
AbstractInorganic CsPbI2Br halide perovskite has received extensive attention due to its excellent thermal stability and suitable bandgap for high-performance solar cells. However, CsPbI2Br can easily transform from the perovskite phase to the non-perovskite phase due to a water vapour-induced phase transition under ambient conditions, leading to a rapid degradation of device performance. Herein, we introduced lanthanum (La3+) ions into the lattice to stabilize the perovskite phase in CsPbI2Br-based all-inorganic solar cells. A power conversion efficiency of 8.03% was obtained at an optimized La3+-doping level of 2%, leading to a 27% efficiency improvement. Moreover, the La3+-doped solar cell retained 90% of its efficiency in ambient air for 400 h, showing a significantly enhanced moisture stability compared to that of the pristine (undoped) device. Detailed analysis indicates that La3+-ions can induce lattice shrinking and thus inhibit the formation of a non-perovskite phase, and enhance the charge carrier lifetime, which contribute to the improved moisture stability and efficiency. Our results indicate that highly stable all-inorganic solar cells can be produced in an air atmosphere, showing great potential for future commercialization.
KeywordHALIDE PEROVSKITE PERFORMANCE EFFICIENT STABILIZATION ALPHA-CSPBI3 TOLERANCE STABILITY
DOI10.1039/c9tc05736f
Indexed BySCI ; EI
Language英语
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Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/32975
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Shanghai Univ Elect Power, Dept Phys, Shanghai Key Lab Mat Protect & Adv Mat Elect Powe, Shanghai 200090, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Lab Micronano Optoelect Mat & Devices, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China
4.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
5.Donghua Univ, Coll Environm Sci & Engn, Shanghai 201620, Peoples R China
6.Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China
7.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201204, Peoples R China
Recommended Citation
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Chen, SL,Zhang, TJ,Liu, XL,et al. Lattice reconstruction of La-incorporated CsPbI2Br with suppressed phase transition for air-processed all-inorganic perovskite solar cells[J]. JOURNAL OF MATERIALS CHEMISTRY C,2020,8(10):3351-3358.
APA Chen, SL.,Zhang, TJ.,Liu, XL.,Qiao, JL.,Peng, L.,...&Lin, J.(2020).Lattice reconstruction of La-incorporated CsPbI2Br with suppressed phase transition for air-processed all-inorganic perovskite solar cells.JOURNAL OF MATERIALS CHEMISTRY C,8(10),3351-3358.
MLA Chen, SL,et al."Lattice reconstruction of La-incorporated CsPbI2Br with suppressed phase transition for air-processed all-inorganic perovskite solar cells".JOURNAL OF MATERIALS CHEMISTRY C 8.10(2020):3351-3358.
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