Optical Simulation of Light Management in CIGS Thin-Film Solar Cells Using Finite Element Method

Applied Sciences

Nikola Bednar¹  Noemi Severino²  Nadja Adamovic²  Alejandro Pérez-Rodríguez²  Philippe Lambin² 

[1] Institute of Sensor and Actuator Systems, Vienna University of Technology, Floragasse 7, Vienna 1040, Austria;

关键词: light management;    CIGS;    thin-film solar cells;    simulation;    finite element method;   

DOI  :  10.3390/app5041735

来源: mdpi

【 摘 要 】

In this paper we present an optical simulation of light management in Cu(In,Ga)Se₂ thin-film solar cells with reduced absorber layer thickness, with the goal of absorption enhancement in the absorber layer. The light management was achieved by texturing of the substrate layer, and the conformal growth of all the following layers was assumed. Two texturing shapes have been explored: triangular and convex, with different periods and height aspect ratios. The simulations have shown that significant enhancement of absorption within the absorber layer can be achieved using the proposed geometry. The results showed that the triangular textures with small periods (100–200 nm) and high aspect ratios have the most prominent effect on the enhancement of absorption within the absorber layer, although they are difficult to achieve experimentally.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.