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Tunable Wide‐Bandgap Monohalide Perovskites
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2020-05-28 , DOI: 10.1002/adom.202000423
Yousra El Ajjouri 1 , Ana M. Igual‐Muñoz 1 , Michele Sessolo 1 , Francisco Palazon 1 , Henk J. Bolink 1
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2020-05-28 , DOI: 10.1002/adom.202000423
Yousra El Ajjouri 1 , Ana M. Igual‐Muñoz 1 , Michele Sessolo 1 , Francisco Palazon 1 , Henk J. Bolink 1
Affiliation
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Herein the mechanochemical synthesis of inorganic as well as hybrid organic–inorganic monohalide perovskites with tunable bandgaps is reported. It is shown that the bandgap bowing known for iodide mixed Sn–Pb perovskites is also present in the pure bromide analogous. This results in technologically very interesting materials with bandgaps in the range of 1.7–1.9 eV. Similar bandgap perovskites are typically achieved by mixing two halides that are prone to segregate over time. This limits the achievable open circuit voltage. For monohalide perovskites this problem is eliminated, making these materials especially promising wide bandgap absorbers for tandem solar cells.
中文翻译:
可调宽带隙一卤化物钙钛矿
本文报道了具有可调带隙的无机以及杂化有机-无机单卤化物钙钛矿的机械化学合成。结果表明,以碘化物混合的Sn-Pb钙钛矿形式存在的带隙弯曲现象也存在于类似的纯溴化物中。这样就产生了技术上非常有趣的材料,其带隙在1.7–1.9 eV的范围内。通常,通过将易于随时间分离的两种卤化物混合来实现类似的带隙钙钛矿。这限制了可达到的开路电压。对于单卤化物钙钛矿来说,这个问题消除了,这使得这些材料特别适合用于串联太阳能电池的宽带隙吸收剂。
更新日期:2020-05-28
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
可调宽带隙一卤化物钙钛矿
本文报道了具有可调带隙的无机以及杂化有机-无机单卤化物钙钛矿的机械化学合成。结果表明,以碘化物混合的Sn-Pb钙钛矿形式存在的带隙弯曲现象也存在于类似的纯溴化物中。这样就产生了技术上非常有趣的材料,其带隙在1.7–1.9 eV的范围内。通常,通过将易于随时间分离的两种卤化物混合来实现类似的带隙钙钛矿。这限制了可达到的开路电压。对于单卤化物钙钛矿来说,这个问题消除了,这使得这些材料特别适合用于串联太阳能电池的宽带隙吸收剂。