Effective recombination velocity of textured surfaces

Kanglin Xiong; Shulong Lu; Desheng Jiang; Jianrong Dong; Hui Yang
May 2010
Applied Physics Letters;5/10/2010, Vol. 96 Issue 19, p193107
Academic Journal
Surface texturization is an effective way to enhance the absorption of light for optoelectronic devices but it also aggravates the surface recombination by enlarging the surface area. In order to evaluate the influence of texture structures on the surface recombination, an effective surface recombination velocity is defined which is assumed to have an equivalent recombination effect on a flat surface. Based on numerical and analytical calculation, the dependences of effective surface recombination on the pattern geometry, the surface recombination velocity, and the diffusion length are analyzed.


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