External-quantum-efficiency enhancement in quantum-dot solar cells with a Fabry-Perot light-trapping structure

被引：2

作者：

Oteki, Yusuke ^{[1
,2
,3
]}

Okada, Yoshitaka ^{[1
,2
,3
]}

机构：

[1] Univ Tokyo, Res Ctr Adv Sci & Technol RCAST, 4-6-1 Meguro Ku, Tokyo 1538904, Japan

[2] Univ Tokyo, Grad Sch Engn, Dept Precis Engn, 7-3-1 Hongo Bunkyo-ku, Tokyo 1138656, Japan

[3] Univ Tokyo, Grad Sch Engn, 7-3-1 Hongo, Bunkyo-ku, Tokyo 1828585, Japan

来源：

HELIYON | 2023年 / 9卷 / 08期

关键词：

Quantum dot; Thin-film solar cell; Light trapping;

D O I：

10.1016/j.heliyon.2023.e19312

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this work, we have experimentally investigated the impact of light trapping on the performance of InAs/GaAs quantum dot (QD) solar cells. To increase the amount of absorbed near-infrared photons, we fabricated a thin-film QD solar cell with a backside mirror where the positions of the QD layers were matched with the intensity peaks of one of the Fabry-Perot (FP) resonances in this structure to enable enhanced QD absorption near 1192 nm. We demonstrate that the external quantum efficiency at a given FP resonance wavelength of such an InAs/GaAs-based QD solar cell can be increased by an order of magnitude over solar cells without FP resonance by optimally positioning the QD layers.

引用

页数：7

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