CuInSe 2 (CIS) thin film solar cells by electrostatic spray deposition

Hyun Yoon, Ji Hoon Woo, Bhavana Joshi, Young Min Ra, Suk Goo Yoon, Ho Young Kim, Se Jin Ahn, Jae Ho Yun, Jihye Gwak, Kyung Hoon Yoon, Scott C. James

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20 Citations (Scopus)

Abstract

In this paper, we demonstrate, for the first time, the manufacture of a CuInSe 2 thin film whose absorber layer is coated using an electrostatic spray deposition (ESD) technique; its complete transformation into a working device with measured conversion efficiency is presented. ESD is superior to pneumatic spraying because it produces nano-scaled, self-dispersive (non-agglomerating), highly wettable (electrowetting) and adhesive droplets to yield a uniform coating on a substrate. Furthermore, ESDs extremely low material consumption rate holds promises for practical use in the solar cell industry. Copper and indium salts are added to various solvents, which are electrostatically sprayed onto a molybdenum-coated soda-lime glass substrate. The effect of substrate temperature on the thin film characteristics is examined. Our cell is completed by adding CdS and ZnO layers onto the CuInSe 2 absorber layer. Light illuminated current-density voltage (J-V) characteristics demonstrate a power conversion efficiency of η = 1.75% ± 0.09 with an open-circuit voltage of V OC = 0.23 V, a short-circuit current density of J SC = 21.72 mA/cm 2, and fill factor of FF = 0.34.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume159
Issue number4
DOIs
Publication statusPublished - 2012 Feb 29

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ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

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