期刊
ACS ENERGY LETTERS
卷 6, 期 3, 页码 1045-1054出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.0c02642
关键词
-
类别
资金
- HyPerCells (a joint graduate school of the Potsdam University)
- HyPerCells (a joint graduate school of the HZB)
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [SPP 2196, SURPRISE 423749265, HIPSTER 424709669, STO1289/1-1, RI1551/15-1, NE410/19-1]
- Federal Ministry for Economic Affairs and Energy [03EE1017C]
- Helmholtz International Research School HI-SCORE [HIRS-0008]
Recent advancements in perovskite solar cell research have focused on improving efficiency and stability by developing high-quality double cation perovskite materials. The low-bandgap cells exhibited high fill factor and short-circuit current, showcasing reduced charge transport losses. The implied efficiency in the neat material reached 28.4% through minimizing interfacial recombination and optical losses.
Recent advancements in perovskite solar cell performance were achieved by stabilizing the alpha-phase of FAPbI(3) in nip-type architectures. However, these advancements could not be directly translated to pin-type devices. Here, we fabricated a high-quality double cation perovskite (MA(0.07)FA(0.93)PbI(3)) with low bandgap energy (1.54 eV) using a two-step approach on a standard polymer (PTAA). The perovskite films exhibit large grains (similar to 1 mu m), high external photoluminescence quantum yields of 20%, and outstanding Shockley-Read-Hall carrier lifetimes of 18.2 mu s without further passivation. The exceptional optoelectronic quality of the neat material was translated into efficient pin-type cells (up to 22.5%) with improved stability under illumination. The low-gap cells stand out by their high fill factor (similar to 83%) due to reduced charge transport losses and short-circuit currents >24 mA cm(-2). Using intensity-dependent quasi-Fermi level splitting measurements, we quantify an implied efficiency of 28.4% in the neat material, which can be realized by minimizing interfacial recombination and optical losses.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据