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Title: Oxygen-free atomic layer deposition of indium sulfide

Patent ·
OSTI ID:1260247

A method for synthesizing an In(III) N,N'-diisopropylacetamidinate precursor including cooling a mixture comprised of diisopropylcarbodiimide and diethyl ether to approximately -30.degree. C., adding methyllithium drop-wise into the mixture, allowing the mixture to warm to room temperature, adding indium(III) chloride as a solid to the mixture to produce a white solid, dissolving the white solid in pentane to form a clear and colorless solution, filtering the mixture over a celite plug, and evaporating the solution under reduced pressure to obtain a solid In(III) N,N'-diisopropylacetamidinate precursor. This precursor has been further used to develop a novel atomic layer deposition technique for indium sulfide by dosing a reactor with the precursor, purging with nitrogen, dosing with dilute hydrogen sulfide, purging again with nitrogen, and repeating these steps to increase growth.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357
Assignee:
UChicago Argnonne, LLC (Chicago, IL)
Patent Number(s):
9,382,618
Application Number:
14/335,745
OSTI ID:
1260247
Resource Relation:
Patent File Date: 2014 Jul 18
Country of Publication:
United States
Language:
English

References (9)

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Atomic Layer Deposition of Indium Sulfide Layers for Copper Indium Gallium Diselenide Solar Cells journal January 2001
High-efficiency copper indium gallium diselenide (CIGS) solar cells with indium sulfide buffer layers deposited by atomic layer chemical vapor deposition (ALCVD) journal January 2003
Oxygen-Free Atomic Layer Deposition of Indium Sulfide journal July 2014
Cationic group 13 complexes incorporating bidentate ligands as polymerization catalysts patent May 2001
Atomic layer deposition using metal amidinates patent July 2009
Apparatus and method for large area multi-layer atomic layer chemical vapor processing of thin films patent-application December 2009
Enhancing the Photovoltaic Response of CZTS Thin-Films patent-application August 2013
Sulfur-Containing Thin Films patent-application June 2015