Polycrystalline thin film CdTe solar cells fabricated by electrodeposition

Donghwan Kim, Scott Pozder, Yuming Zhu, John U. Trefny

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

Several issues regarding the fabrication of CdTe solar cells by electrodeposition have been investigated. The CdTe deposition parameters were optimized as follows: the deposition current density Jdep = 0.33 - 0.40 mA/cm2, the anode current ratio RTe/Cd = 2.7, and the deposition potential Vdep = -600 mV against a Ag/AgCl reference electrode. CdCl2 treatment and subsequent annealing made a significant change in the composition: the film became Cd-rich throughout its whole thickness, and the concentrations of both Cd and Cl increased near the surface. Electron beam-induced current (EBIC) data showed a peak inside the CdTe layer suggesting a buried homojunction. Use of CdS double layers composed of a CdCl2-treated, annealed CdS underlayer covered with an as-deposited CdS overlayer resulted in a significant increase in open-circuit voltage Voc up to 0.78 V. 11.0% CdS/CdTe/Au dot cells (0.033 cm2) have been produced in this work.

Original languageEnglish
Pages (from-to)334-337
Number of pages4
JournalConference Record of the IEEE Photovoltaic Specialists Conference
Volume1
Publication statusPublished - 1994
EventProceedings of the 24th IEEE Photovoltaic Specialists Conference. Part 2 (of 2) - Waikoloa, HI, USA
Duration: 1994 Dec 51994 Dec 9

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Polycrystalline thin film CdTe solar cells fabricated by electrodeposition'. Together they form a unique fingerprint.

  • Cite this