Proposal of simplified model for absorption coefficients in quantum dot array based intermediate band solar cell structure

IEICE Electronics Express

Amir Mehdipour¹  Kenji Sasaoka¹  Matsuto Ogawa¹  Satofumi Souma¹ 

[1] Department of Electrical and Electronic Engineering, Kobe University

关键词: quantum dot;    solar cells;    intermediate band;    tight-binding model;   

DOI  :  10.1587/elex.11.20140548

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(15)Cited-By(1)We propose a simplified theoretical model to analyze the absorption coefficients in quantum dot intermediate band solar cell (QD-IBSC) structure. Our theoretical model, based on the multiband tight-binding Hamiltonian including the conduction, valence, and the intermediate band, can capture some essential features in the actual QD-IBSC such as the absorption path dependence of the absorption strength and the line shape of the absorption spectrum in spite of its simplicity. The main feature of this model is its ability to be applied to any QD-IBSC system regardless of the geometrical parameters (QDs shapes and spacing) or the base materials by changing the relevant coupling parameters. The proposed simplified should be of useful for the semi-quantitative understanding and modeling of QD-IBSC.

【 授权许可】

Unknown