An optimized structure for CdTe solar cells

Yunfei Chen, Peng Shou, Xuehai Tan, Cao Xin, Bastian Siepchen, Ganhua Fu, Alan E. Delahoy, Ken K. Chin

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


In the last five years, the world record of CdTe thin film solar cell conversion efficiency has been increased from 16.5% to 21.0%. Most noticeable and dramatic efficiency improvement has been originated from the elimination of blue loss by using wider band gap n-window layer such as CdSO to replace the traditional n-CdS of band gap 2.4 Ev. In this work, we use CdSO as the new n-window layer and systematic computer simulation is used to investigate the influence of the conduction band offset between CdSO and CdTe layer, the thickness and the doping concentration of CdSO layer on the efficiency of the solar cell. Finally, a new optimized CdTe so lar cell with highest simulated efficiency is designed and the role of CdSO layer is clarified. Simulation results also suggest that the new structure can almost remove the blue loss.

Original languageEnglish (US)
Title of host publication2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)9781509027248
StatePublished - Nov 18 2016
Event43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 - Portland, United States
Duration: Jun 5 2016Jun 10 2016

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371


Other43rd IEEE Photovoltaic Specialists Conference, PVSC 2016
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


  • CdTe solar cells
  • blue loss
  • conduction band offset
  • doping concentration
  • n-window layer


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