Abstract
CdTe based thin film solar cells have shown to be competitive in terms of efficiency and low cost, but the polycrystalline structure and low minority carrier lifetime constrain CdTe based devices from reaching the theoretical efficiency limit. In this work, the effect of Se and Cl segregation in polycrystalline CdSeTe photovoltaic devices was studied. We demonstrated using two-photon time-resolved photoluminescence (TRPL) that the Se alloyed CdSeTe absorber layer shows high minority carrier lifetime, and used density functional theory (DFT) calculations to explain the origin of such high lifetime.
Original language | English (US) |
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Title of host publication | 2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 783-785 |
Number of pages | 3 |
ISBN (Electronic) | 9781728104942 |
DOIs | |
State | Published - Jun 2019 |
Event | 46th IEEE Photovoltaic Specialists Conference, PVSC 2019 - Chicago, United States Duration: Jun 16 2019 → Jun 21 2019 |
Publication series
Name | Conference Record of the IEEE Photovoltaic Specialists Conference |
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ISSN (Print) | 0160-8371 |
Conference
Conference | 46th IEEE Photovoltaic Specialists Conference, PVSC 2019 |
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Country/Territory | United States |
City | Chicago |
Period | 6/16/19 → 6/21/19 |
Funding
This work is supported by the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) under Solar Energy Technology Office (SETO) Award Number DE-EE00007545.
Keywords
- II-VI semiconductor materials
- cadmium compounds
- photovoltaic cells
- selenium
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering