Details

Autor(en) / Beteiligte

• Lin, Jia
• Lai, Minliang
• Dou, Letian
• Kley, Christopher S
• Chen, Hong
• Peng, Fei
• Sun, Junliang
• Lu, Dylan
• Hawks, Steven A
• Xie, Chenlu
• Cui, Fan
• Alivisatos, A Paul
• Limmer, David T
• Yang, Peidong

Titel

Thermochromic halide perovskite solar cells

Ist Teil von

• Nature materials, 2018-03, Vol.17 (3), p.261-267

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Smart photovoltaic windows represent a promising green technology featuring tunable transparency and electrical power generation under external stimuli to control the light transmission and manage the solar energy. Here, we demonstrate a thermochromic solar cell for smart photovoltaic window applications utilizing the structural phase transitions in inorganic halide perovskite caesium lead iodide/bromide. The solar cells undergo thermally-driven, moisture-mediated reversible transitions between a transparent non-perovskite phase (81.7% visible transparency) with low power output and a deeply coloured perovskite phase (35.4% visible transparency) with high power output. The inorganic perovskites exhibit tunable colours and transparencies, a peak device efficiency above 7%, and a phase transition temperature as low as 105 °C. We demonstrate excellent device stability over repeated phase transition cycles without colour fade or performance degradation. The photovoltaic windows showing both photoactivity and thermochromic features represent key stepping-stones for integration with buildings, automobiles, information displays, and potentially many other technologies.