Rational strategy for power doubling of monolithic multijunction Ⅲ-Ⅴ photovoltaics by accommodating attachable scattering waveguides  

作　　者：Shin Hyung Lee Hyo Jin Kim Jae-Hyun Kim Gwang Yeol Park Sun-Kyung Kim Sung-Min Lee 

机构地区：[1]School of Electrical Engineering,Korea Advanced Institute of Science and Technology(KAIST),Daejeon 34141,Republic of Korea [2]Optoelectronic Convergence Research Center,Korea Photonics Technology Institute,Gwangju 61007,Republic of Korea [3]Department of Applied Physics,Kyung Hee University,Yongin 17104,Republic of Korea [4]Department of Electrical Engineering,Hanyang University,Seoul 04763,Republic of Korea [5]Division of Materials Science and Engineering,Hanyang University,Seoul 04763,Republic of Korea

出　　处：《Light(Science & Applications)》2024年第11期2734-2744,共11页光（科学与应用)（英文版）

基　　金：supported in part by the research fund of Hanyang University(HY-202300000003126);in part by the National Research Foundation of Korea(NRF)funded by the Ministry of Science,ICT under Grants RS-2023-00209380,RS-2024-00415821,NRF-2021M3H4A6A01048300,NRF-2021M3H4A1A02051253,and NRF-2022M318A2078705;in part by the Technology Innovation Program(20018379,Development of high-reliability light-emitting fiber-based woven wearable displays)funded by the Ministry of Trade,Industry&Energy of the Republic of Korea.

摘　　要：While waveguide-based light concentrators offer significant advantages,their application has not been considered an interesting option for assisting multijunction or other two-terminal tandem solar cells.In this study,we present a simple yet effective approach to enhancing the output power of transfer-printed multijunction InGaP/GaAs solar cells.By utilizing a simply combinable waveguide concentrator featuring a coplanar waveguide with BaSO4 Mie scattering elements,we enable the simultaneous absorption of directly illuminated solar flux and indirectly waveguided flux.The deployment of cells is optimized for front-surface photon collection in monofacial cells.Through systematic comparisons across various waveguide parameters,supported by both experimental and theoretical quantifications,we demonstrate a remarkable improvement in the maximum output power of a 26%-efficient cell,achieving an enhancement of~93%with the integration of the optimal scattering waveguide.Additionally,a series of supplementary tests are conducted to explore the effective waveguide size,validate enhancements in arrayed cell module performance,and assess the drawbacks associated with rear illumination.These findings provide a comprehensive understanding of our proposed approach towards advancing multi-junction photovoltaics.

关 键 词：WAVEGUIDE SCATTERING POWER 

分 类 号：TN2[电子电信—物理电子学]