Monocrystalline ZnTe/CdTe/MgCdTe double heterostructure solar cells grown on InSb substrates

Ying Shen Kuo, Jacob Becker, Shi Liu, Yuan Zhao, Xin Hao Zhao, Peng Yu Su, Ishwara Bhat, Yong-Hang Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Monocrystalline p-ZnTe/p-CdTe/n-CdTe/n-MgCdTe double-heterostructure (DH) solar cells are designed and demonstrated with a maximum efficiency of 10.9 %, an open-circuit voltage (VOC) of 759 mV, a short-circuit current density (JSC) of 21.2 mA/cm2 and a fill factor (FF) of 67.4 %. The low efficiency is mainly due to the combination of the low VOC and FF, which are attributed to high interface recombination at the ZnTe/CdTe, and p-CdTe/n-CdTe interfaces. Activation energies (EA) of 1.54 eV and 1.25 eV are obtained from temperature dependent light-IV measurements, indicating that the dominant recombination mechanism changes from interface recombination for non-annealed devices to bulk recombination for devices annealed at 450 °C.

Original languageEnglish (US)
Title of host publication2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479979448
DOIs
StatePublished - Dec 14 2015
Event42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States
Duration: Jun 14 2015Jun 19 2015

Other

Other42nd IEEE Photovoltaic Specialist Conference, PVSC 2015
CountryUnited States
CityNew Orleans
Period6/14/156/19/15

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Keywords

  • cadmium telluride
  • heterostructure
  • MBE
  • solar cells

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Kuo, Y. S., Becker, J., Liu, S., Zhao, Y., Zhao, X. H., Su, P. Y., Bhat, I., & Zhang, Y-H. (2015). Monocrystalline ZnTe/CdTe/MgCdTe double heterostructure solar cells grown on InSb substrates. In 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015 [7355652] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2015.7355652