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Title: Liquid-Phase Deposition of CIS Thin Layers: Final Report, February 2003--July 2005

Abstract

The goal of this project was to fabricate single-phase CIS (a-Cu-In-Se, stoichiometric composition: CuInSe2) thin films for photovoltaic applications from a liquid phase - a Cu-In-Se melt of appropriate composition. This approach of liquid-phase deposition (LPD) is based on the new phase diagram we have established for Cu-In-Se, the first complete equilibrium phase diagram of this system. The liquidus projection exhibits four composition fields in which the primary solid phase, i.e., the first solid material that forms on cooling down from an entirely liquid state, is a-CuInSe2. Remarkably, none of the four composition fields is anywhere near the stoichiometric composition (CuInSe2) of a-CuInSe2. The results demonstrate that the proposed technique is indeed capable of producing films with a particularly large grain size and a correspondingly low density of grain boundaries. To obtain films sufficiently thin for solar cell applications and with a sufficiently smooth surface, it is advantageous to employ a sliding boat mechanism. Future work on liquid-phase deposition of CIS should focus on the interaction between the melt and the substrate surface, the resulting CIS interfaces, the surface morphology of the LPD-grown films, and, of course, the electronic properties of the material.

Authors:
;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
876122
Report Number(s):
NREL/SR-520-39341
XDJ-3-30630-33; TRN: US200604%%387
DOE Contract Number:
AC36-99-GO10337
Resource Type:
Technical Report
Resource Relation:
Related Information: Work performed by Case Western Reserve University, Cleveland, Ohio
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; DEPOSITION; GRAIN BOUNDARIES; GRAIN SIZE; MORPHOLOGY; PHASE DIAGRAMS; SOLAR CELLS; SUBSTRATES; THIN FILMS; LIQUID-PHASE DEPOSITION; THIN FILM; ELECTRONIC PROPERTIES; COPPER INDIUM DISELENIDE (CIS); GRAIN BOUNDARY; SLIDING-BOAT REACTOR; Solar Energy - Photovoltaics

Citation Formats

Ernst, F., and Pirouz, P. Liquid-Phase Deposition of CIS Thin Layers: Final Report, February 2003--July 2005. United States: N. p., 2006. Web. doi:10.2172/876122.
Ernst, F., & Pirouz, P. Liquid-Phase Deposition of CIS Thin Layers: Final Report, February 2003--July 2005. United States. doi:10.2172/876122.
Ernst, F., and Pirouz, P. Wed . "Liquid-Phase Deposition of CIS Thin Layers: Final Report, February 2003--July 2005". United States. doi:10.2172/876122. https://www.osti.gov/servlets/purl/876122.
@article{osti_876122,
title = {Liquid-Phase Deposition of CIS Thin Layers: Final Report, February 2003--July 2005},
author = {Ernst, F. and Pirouz, P.},
abstractNote = {The goal of this project was to fabricate single-phase CIS (a-Cu-In-Se, stoichiometric composition: CuInSe2) thin films for photovoltaic applications from a liquid phase - a Cu-In-Se melt of appropriate composition. This approach of liquid-phase deposition (LPD) is based on the new phase diagram we have established for Cu-In-Se, the first complete equilibrium phase diagram of this system. The liquidus projection exhibits four composition fields in which the primary solid phase, i.e., the first solid material that forms on cooling down from an entirely liquid state, is a-CuInSe2. Remarkably, none of the four composition fields is anywhere near the stoichiometric composition (CuInSe2) of a-CuInSe2. The results demonstrate that the proposed technique is indeed capable of producing films with a particularly large grain size and a correspondingly low density of grain boundaries. To obtain films sufficiently thin for solar cell applications and with a sufficiently smooth surface, it is advantageous to employ a sliding boat mechanism. Future work on liquid-phase deposition of CIS should focus on the interaction between the melt and the substrate surface, the resulting CIS interfaces, the surface morphology of the LPD-grown films, and, of course, the electronic properties of the material.},
doi = {10.2172/876122},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2006},
month = {Wed Feb 01 00:00:00 EST 2006}
}

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