ICCAS OpenIR  > 分子纳米结构与纳米技术实验室
Additive engineering for high-performance room-temperature-processed perovskite absorbers with micron-size grains and microsecond-range carrier lifetimes
Han, Qiwei1,2; Bai, Yusong2; Liu, Jie1,3,4; Du, Ke-zhao1,2; Li, Tianyang1,2; Ji, Dong2; Zhou, Yihao1; Cao, Changyong5; Shin, Donghyeop1,2; Ding, Jie3,4; Franklin, Aaron D.2,5; Glass, Jeffrey T.1,5; Hu, Jinsong3,4; Therien, Michael J.2; Liu, Jie2; Mitzi, David B.1,2
2017-11-01
Source PublicationENERGY & ENVIRONMENTAL SCIENCE
Volume10Issue:11Pages:2365-2371
AbstractPerovskite photovoltaics have attracted remarkable attention recently due to their exceptional power conversion efficiencies (PCE). State-of-the-art perovskite absorbers typically require thermal annealing steps for high film quality. However, the annealing process adds cost and reduces yield for device fabrication and may also hinder application in tandem photovoltaics and flexible/ultra-low-cost optoelectronics. Herein, we report an additive-based room-temperature process for realizing high-quality methylammonium lead iodide films with micron-sized grains (42 mm) and microsecond-range carrier lifetimes (tau(1) = 931.94 +/- 89.43 ns; tau(2) = 320.41 +/- 43.69 ns). Solar cells employing such films demonstrate 18.22% PCE with improved current-voltage hysteresis and stability without encapsulation. Further, we reveal that room-temperature-processed perovskite film grain size strongly depends on the precursor aggregate size in the film-deposition solution and that additive-based tuning of aggregate properties enables enlarging grains to the micron scale. These results offer a new pathway for more versatile, cost-effective perovskite processing.
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/39148
Collection分子纳米结构与纳米技术实验室
Affiliation1.Duke Univ, Dept Mech Engn & Mat Sci, Durham, NC 27708 USA
2.Duke Univ, Dept Chem, Durham, NC 27708 USA
3.Chinese Acad Sci, Inst Chem, Key Lab Mol Nanostruct & Nanotechnol, 2 North 1st St, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA
Recommended Citation
GB/T 7714
Han, Qiwei,Bai, Yusong,Liu, Jie,et al. Additive engineering for high-performance room-temperature-processed perovskite absorbers with micron-size grains and microsecond-range carrier lifetimes[J]. ENERGY & ENVIRONMENTAL SCIENCE,2017,10(11):2365-2371.
APA Han, Qiwei.,Bai, Yusong.,Liu, Jie.,Du, Ke-zhao.,Li, Tianyang.,...&Mitzi, David B..(2017).Additive engineering for high-performance room-temperature-processed perovskite absorbers with micron-size grains and microsecond-range carrier lifetimes.ENERGY & ENVIRONMENTAL SCIENCE,10(11),2365-2371.
MLA Han, Qiwei,et al."Additive engineering for high-performance room-temperature-processed perovskite absorbers with micron-size grains and microsecond-range carrier lifetimes".ENERGY & ENVIRONMENTAL SCIENCE 10.11(2017):2365-2371.
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