Bandtail Limits to Solar Conversion Efficiencies in Amorphous Silicon Solar Cells

K. Zhu, J. Yang, W. Wang, E. A. Schiff, J. Liang, S. Guha

Research output: Contribution to journalConference article

13 Scopus citations

Abstract

We describe a model for a-Si:H based pin solar cells derived primarily from valence bandtail properties. We show how hole drift-mobility measurements and measurements of the temperature-dependence of the open-circuit voltage VOC can be used to estimate the parameters, and we present V OC(T) measurements. We compared the power density under solar illumination calculated with this model with published results for as-deposited a-Si:H solar cells. The agreement is within 4% for a range of thicknesses, suggesting that the power from as-deposited cells is close to the bandtail limit.

Original languageEnglish (US)
Pages (from-to)297-302
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume762
DOIs
StatePublished - 2003
EventMaterials Research Proceedings: Amorphous and Nanocrystalline Silicon-Based Films - 2003 - San Francisco, CA, United States
Duration: Apr 22 2003Apr 25 2003

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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