Charge transfer from CdTe quantum dots into a CdS thin layer

Elisabeth Zillner, Björn Eckhardt, Ahmed Ennaoui, Martha Ch. Lux-Steiner, Thomas Dittrich

Research output: Contribution to journalConference article

Abstract

Electron injection from CdTe quantum dots (CdTe-QDs) into ultra-thin CdS layers has been demonstrated by transient and spectral dependent surface photovoltage (SPV) methods while the thickness of the CdS layer was varied systematically between several nm and tens on nm. Signal heights and decay times at half maximum were correlated with the thickness of the CdS layer. The decay times increased by several orders of magnitude for electrons transferred across the charge-selective CdS/CdTe-QD contact in comparison to electrons photo-generated in the CdS layer.

Original languageEnglish
Pages (from-to)225-231
Number of pages7
JournalEnergy Procedia
Volume10
DOIs
Publication statusPublished - 1 Dec 2011
EventAdvanced Inorganic Materials and Concepts for Photovoltaics - Symposium R at the E-MRS 2011 Spring Meeting - Nice, France
Duration: 9 May 201113 May 2011

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Keywords

  • CdS
  • CdTe
  • Quantum dots
  • Surface photovoltage

ASJC Scopus subject areas

  • Energy(all)

Cite this

Zillner, E., Eckhardt, B., Ennaoui, A., Ch. Lux-Steiner, M., & Dittrich, T. (2011). Charge transfer from CdTe quantum dots into a CdS thin layer. Energy Procedia, 10, 225-231. https://doi.org/10.1016/j.egypro.2011.10.182