A Model for the Operation of Perovskite Based Hybrid Solar Cells: Formulation, Analysis, and Comparison to Experiment
A Model for the Operation of Perovskite Based Hybrid Solar Cells: Formulation, Analysis, and Comparison to Experiment
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DOI：
10.1137/130934258
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
J. Foster;H. Snaith;T. Leijtens;G. Richardson
中科院分区：
文献类型：
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作者：
J. Foster;H. Snaith;T. Leijtens;G. Richardson
本工作是关于钙钛矿基混合太阳能电池的建模，通过将有机卤化铅钙钛矿（CH $_3 $NH $_3 $PbI $_{3-x}$Cl$_x$）光吸收剂的板片夹在（n型）受体材料和（p型）供体材料（通常是二氧化钛和螺环）之间形成。基于电荷载流子运动的漂移扩散方程和电势的泊松方程，建立了这些电池的电行为模型。它是封闭的（i）内部界面条件占电荷复合/产生和电荷载流子密度的跳跃所产生的差异，在材料之间的电子亲和势/电离势和（ii）欧姆接触的边界条件。该模型进行了分析，通过使用渐近和数值技术相结合。这导致了一个近似-但高度准确-表达的电流-电压关系作为太阳能感应光电流的函数。此外，我们表明，这…
This work is concerned with the modeling of perovskite based hybrid solar cells formed by sandwiching a slab of organic lead halide perovskite (CH$_3$NH$_3$PbI$_{3-x}$Cl$_x$) photo-absorber between (n-type) acceptor and (p-type) donor materials---typically titanium dioxide and spiro. A model for the electrical behavior of these cells is formulated based on drift-diffusion equations for the motion of the charge carriers and Poisson's equation for the electric potential. It is closed by (i) internal interface conditions accounting for charge recombination/generation and jumps in charge carrier densities arising from differences in the electron affinity/ionization potential between the materials and (ii) ohmic boundary conditions on the contacts. The model is analyzed by using a combination of asymptotic and numerical techniques. This leads to an approximate---yet highly accurate---expression for the current-voltage relationship as a function of the solar induced photo-current. In addition, we show that this...