Abstract
Integrating wide-bandgap III-V with Si solar cells has been shown to yield higher efficienciesthan Si alone: As also presented at this conference, four-terminal efficiencies exceeding 32 havebeen attained. In this contribution, independent and electrically connected operation of the subcellsin such tandem cells is examined. The optics of the tandem cell change significantly if a conducting interconnect, rather than an insulating glass slide, is required between the subcells. These effects are studied, and optically optimized structures for different types of tandem cell operation are presented. It is found that minimizing reflection at the conductive interface between the two cells while maintaining conductivity is the key challenge faced in such devices.
Original language | American English |
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Pages | 3446-3450 |
Number of pages | 5 |
DOIs | |
State | Published - Jun 2019 |
Event | 46th IEEE Photovoltaic Specialists Conference, PVSC 2019 - Chicago, United States Duration: 16 Jun 2019 → 21 Jun 2019 |
Conference
Conference | 46th IEEE Photovoltaic Specialists Conference, PVSC 2019 |
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Country/Territory | United States |
City | Chicago |
Period | 16/06/19 → 21/06/19 |
Bibliographical note
Publisher Copyright:© 2019 IEEE.
NREL Publication Number
- NREL/CP-5K00-78469
Keywords
- glass
- II-VI semiconductor materials
- indium tin oxide
- optical reflection
- silicon
- zinc compounds