Electrodeposition of Cu(In,Ga)Se2 crystals on high-density CdS nanowire arrays for photovoltaic applications

Woo Chul Kwak, Sung Hwan Han, Tae Geun Kim, Yun Mo Sung

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

High-density and single-crystalline CdS nanowires were grown on fluorine-doped tin oxide (FTO)/soda-lime glass substrates using Bi catalysts via the so-called solution-liquid-solid (SLS) mechanism. Through a series of voltage loading steps, high-quality Cu(In,Ga)Se2 (CIGS) light absorption layers were electrochemically deposited on the CdS window layers and subsequently selenized at 400 °C to form photovoltaic cells. Due to the one dimensionality and single crystallinity of the CdS nanowires, the carrier collection efficiency could be improved. The resulting CIGS/CdS nanowire solar cells showed a light energy conversion efficiency of ̃6.18% under AM 1.5 conditions (I = 100 mW/cm2), which is ̃28.7% higher than that of the equivalent CIGS solar cells containing chemically deposited CdS thin film as a window layer.

Original languageEnglish
Pages (from-to)5297-5301
Number of pages5
JournalCrystal Growth and Design
Volume10
Issue number12
DOIs
Publication statusPublished - 2010 Dec 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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