Fabrication and characterization of electrodeposited Cu2O p-n homojunction solar cells

Kunhee Han, Xiaofei Han, Meng Tao

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


Two device structures for electrodeposited Cu2O p-n homojunction solar cells, substrate and superstrate, have been fabricated and characterized. The Cu2O p-n homojunctions in these cells were prepared by a two-step sequential electrodeposition process. It was found that the open-circuit voltage of the cells was affected by solution pH during the deposition of the n-type Cu2O layer. Solution pH controls oxygen incorporation and thus the native point defects in Cu2O, which in turn controls the flatband voltage of Cu2O. A thermal stability study indicates that the performance of the Cu2O solar cells is unstable at temperatures above 150 °C. For Cu2O superstrate solar cells, it was found that the thickness of the p-type Cu2O layer is critical to the performance of the cells. The opencircuit voltage, and thus the efficiency of the cells, is proportional to the thickness of the p-layer, and a 3 μm p-Cu2O layer is necessary for good performance. The highest efficiency of 0.15 % is achieved in a Cu2O substrate solar cell with an area of 0.01 cm2.

Original languageEnglish (US)
Title of host publicationProgram - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
Number of pages4
StatePublished - Dec 20 2010
Externally publishedYes
Event35th IEEE Photovoltaic Specialists Conference, PVSC 2010 - Honolulu, HI, United States
Duration: Jun 20 2010Jun 25 2010

Publication series

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


Other35th IEEE Photovoltaic Specialists Conference, PVSC 2010
Country/TerritoryUnited States
CityHonolulu, HI

ASJC Scopus subject areas

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


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