Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence

Lin Zhu, Masahiro Yoshita, Jialing Tsai, Yichin Wang, Chungyu Hong, Guochung Ghi, Changsu Kim, Pei-Chen Yu, Hidefumi Akiyama

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

By using absolute EL measurement, we characterize current-dependent external radiative efficiency of GaInAs/GaAsP multiple-quantum-well (MQW) single-junction solar cells with and without a back distributed Bragg reflector (DBR). We quantified the internal radiative efficiency (η η ) under illuminated condition for analyzing their difference in photovoltaic performances. It was revealed that MQWs showed an advantage of improved qint compared with a bulk layer, and that a back DBR indeed improved conversion efficiency via double-pass absorption of sun light, but improvement via reduction of rear radiative emission loss toward substrate was small. Efficiency add-on via improved material quality, or qint, in the same structures was predicted.

Original languageEnglish
Title of host publication2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-4
Number of pages4
ISBN (Electronic)9781509056057
DOIs
StatePublished - 1 Jan 2017
Event44th IEEE Photovoltaic Specialist Conference, PVSC 2017 - Washington, United States
Duration: 25 Jun 201730 Jun 2017

Publication series

Name2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017

Conference

Conference44th IEEE Photovoltaic Specialist Conference, PVSC 2017
CountryUnited States
CityWashington
Period25/06/1730/06/17

Keywords

  • Absolute electroluminescence
  • Distributed Bragg reflector
  • GaAs
  • Quantum wells
  • Solar cells

Fingerprint Dive into the research topics of 'Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence'. Together they form a unique fingerprint.

Cite this