Interface Engineering for 25% CdTe Solar Cells

Tursun Ablekim, Eric Colegrove, Wyatt K. Metzger

Research output: Contribution to journalArticlepeer-review

76 Scopus Citations

Abstract

Buffer layers, such as CdS and MgxZn1-xO (MZO), are critical for CdTe and other thin film polycrystalline solar cells. A ternary compound, such as MZO, allows for interface engineering by adjusting composition, bandgap, and doping to manipulate barriers and recombination to enhance thin film efficiencies toward 25%. Here, theoretical studies demonstrate the enormous impact of front interface offset and emitter doping have on device performance. The results reveal it is possible to achieve 25% device efficiency with open-circuit voltage >1 V, even for 105 cm/s recombination velocity, provided the interface offsets and doping are properly engineered.

Original languageAmerican English
Pages (from-to)5135-5139
Number of pages5
JournalACS Applied Energy Materials
Volume1
Issue number10
DOIs
StatePublished - 2018

Bibliographical note

Publisher Copyright:
Copyright © 2018 American Chemical Society.

NREL Publication Number

  • NREL/JA-5K00-72328

Keywords

  • cadmium telluride
  • CdTe
  • MgZnO
  • recombination
  • thin film solar cells

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