CIGS films via nanoparticle spray deposition: Attempts at densifying a porous precursor

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:302536

Schulz, D L; Curtis, C J; Cram, A; Alleman, J L; Mason, A; Matson, R J; Perkins, J D; Ginley, D S ^[1]

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1. National Renewable Energy Lab., Golden, CO (United States)

This report summarizes their recent efforts to produce large-grained CIGS materials from porous nanoparticle precursor films. In this approach, a nanoparticle colloid is first prepared via low-temperature solution synthesis. Next, a thin precursor film is prepared by spray deposition of this colloid onto a heated substrate. Post-processing of these precursors is performed to induce phase formation and grain growth. Various colloids have been sprayed onto substrates such as molybdenum/glass and CdS/SnO{sub 2}/glass. Post-processing treatments under controlled gas ambients have been performed according to both standard and rapid-thermal annealing (RTA) approaches. Morphology, phase formation, and chemical composition of these nanoparticle-derived films have been characterized using SEM, XRD, Raman, and AES. Although the majority of the approaches employed did not produce large-grained materials, CIGS colloid sprayed onto CdS/SnO{sub 2}/glass substrates heated at 225 C produced films with a dense morphology as-deposited.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• OSTI ID: 302536
• Report Number(s): CONF-970953--
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
36 MATERIALS SCIENCE
ANNEALING
CHEMICAL COMPOSITION
COPPER SELENIDE SOLAR CELLS
COPPER SELENIDES
FABRICATION
GALLIUM SELENIDES
GRAIN SIZE
INDIUM SELENIDE SOLAR CELLS
INDIUM SELENIDES
MORPHOLOGY
SPRAY COATING