Pockett Adam, Eperon Giles E, Sakai Nobuya, Snaith Henry J, Peter Laurence M, Cameron Petra J
Department of Chemistry, University of Bath, Bath, BA2 7AY, UK.
Department of Physics, Clarendon Laboratory, University of Oxford, Oxford, OX1 3PU, UK and Department of Chemistry, University of Washington, Seattle, WA 98195, USA.
Phys Chem Chem Phys. 2017 Feb 22;19(8):5959-5970. doi: 10.1039/c6cp08424a.
Perovskite solar cells (PSC) are shown to behave as coupled ionic-electronic conductors with strong evidence that the ionic environment moderates both the rate of electron-hole recombination and the band offsets in planar PSC. Numerous models have been presented to explain the behaviour of perovskite solar cells, but to date no single model has emerged that can explain both the frequency and time dependent response of the devices. Here we present a straightforward coupled ionic-electronic model that can be used to explain the large amplitude transient behaviour and the impedance response of PSC.
钙钛矿太阳能电池（PSC）被证明表现为离子 - 电子耦合导体，有充分证据表明离子环境会调节平面PSC中的电子 - 空穴复合速率和能带偏移。已经提出了许多模型来解释钙钛矿太阳能电池的行为，但迄今为止，还没有出现一个能够同时解释器件的频率和时间依赖性响应的单一模型。在这里，我们提出了一个简单的离子 - 电子耦合模型，可用于解释PSC的大幅度瞬态行为和阻抗响应。
