Lattice reconstruction of La-incorporated CsPbI2Br with suppressed phase transition for air-processed all-inorganic perovskite solar cells

doi:10.1039/c9tc05736f

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	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
刊名	JOURNAL OF MATERIALS CHEMISTRY C
	2020
卷号	8 期号:10 页码:3351-3358
关键词	HALIDE PEROVSKITE PERFORMANCE EFFICIENT STABILIZATION ALPHA-CSPBI3 TOLERANCE STABILITY
ISSN号	2050-7526
DOI	10.1039/c9tc05736f
文献子类	期刊论文
英文摘要	Inorganic 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.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32975]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.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 Opt & Fine Mech, Lab Micronano Optoelect Mat & Devices, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 4.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201204, Peoples R China 5.Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China 6.Donghua Univ, Coll Environm Sci & Engn, Shanghai 201620, Peoples R China 7.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	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.