1. Recent progress in lead-free perovskite (-like) solar cells
- Author
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Shufeng Wang, Cuncun Wu, Zhijian Chen, Daiqiang Huang, Qiaohui Zhang, Hungkit Ting, Shiyuan Wei, Lixin Xiao, Bo Qu, and Weihai Sun
- Subjects
Electron mobility ,Materials science ,Silicon ,Renewable Energy, Sustainability and the Environment ,Materials Science (miscellaneous) ,Metal ions in aqueous solution ,Diffusion ,Energy conversion efficiency ,Energy Engineering and Power Technology ,chemistry.chemical_element ,02 engineering and technology ,Photoelectric effect ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Fuel Technology ,Nuclear Energy and Engineering ,chemistry ,Chemical engineering ,Direct and indirect band gaps ,0210 nano-technology ,Perovskite (structure) - Abstract
Organic-inorganic hybrid perovskite solar cells (SCs) have emerged as one of the most promising contenders to traditional silicon solar cells, due to their active layers outstanding photoelectric properties, such as appropriate direct bandgap, balanced high carrier mobility and long carrier diffusion length, the identified power conversion efficiency (PCE) has reached to 22.7%. But the toxic lead, a key component in the archetypical light harvesting material, is a large obstacle to commercialization. Herein, we reviewed the recent progress in lead-free perovskite (-like) SCs according to the valent difference of metal ions in absorber material, e.g., bivalent (Sn 2+ , Ge 2+ , Cu 2+ , Sr 2+ ), trivalent (Bi 3+ , Sb 3+ ), tetravalent (Sn 4+ ) and hybrid valent (e.g. Ag + and Bi 3+ ). Finally, we gave an outlook on the tactic to achieve high performance lead-free perovskite (-like) SCs.
- Published
- 2018
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