期刊
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
卷 2, 期 3, 页码 -出版社
WILEY
DOI: 10.1002/aesr.202000065
关键词
atomic layer deposition; crystal orientation; perovskite solar cells; stability; thermal evaporation
资金
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [834431]
- Spanish Ministry of Science, Innovation and Universities (MICIU) [MAT2017-88821-R, RTI2018-095362-A-I00, PCI2019-111829-2, EQC2018-004888-P]
- Comunitat Valenciana [IDIFEDER/2018/061, Prometeu/2020/077]
- TUBITAK 2214-A - International Doctoral Research Fellowship Programme
The study evaluates the long-term stability of vacuum-deposited methylammonium lead iodide (MAPbI(3)) perovskite solar cells with an ALD Al2O3 coating, which improves thermal stability but leads to a decrease in PCE under room temperature operation.
Herein, the long-term stability of vacuum-deposited methylammonium lead iodide (MAPbI(3)) perovskite solar cells (PSCs) with power conversion efficiencies (PCEs) of around 19% is evaluated. A low-temperature atomic layer deposition (ALD) Al2O3 coating is developed and used to protect the MAPbI(3) layers and the solar cells from environmental agents. The ALD encapsulation enables the MAPbI(3) to be exposed to temperatures as high as 150 degrees C for several hours without change in color. It also improves the thermal stability of the solar cells, which maintain 80% of the initial PCEs after aging for approximate to 40 and 37days at 65 and 85 degrees C, respectively. However, room-temperature operation of the solar cells under 1sun illumination leads to a loss of 20% of their initial PCE in 230h. Due to the very thin ALD Al2O3 encapsulation, X-ray diffraction can be performed on the MAPbI(3) films and completed solar cells before and after the different stress conditions. Surprisingly, it is found that the main effect of light soaking and thermal stress is a crystal reorientation with respect to the substrate from (002) to (202) of the perovskite layer, and that this reorientation is accelerated under illumination.
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