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Title: Technique for achieving large-grain Ag.sub.2ZnSn(S,Se).sub.4thin films

Abstract

Techniques for increasing grain size in AZTSSe absorber materials are provided. In one aspect, a method for forming an absorber film on a substrate includes: contacting the substrate with an Ag source, a Zn source, a Sn source, and an S source and/or an Se source under conditions sufficient to form the absorber film on the substrate having a target composition of: Ag.sub.XZn.sub.YSn(S,Se).sub.Z, wherein 1.7<2.2, 0.9<1.3, and 3.5<4.5, and including an amount of the Ag source that is from about 10% to about 30% greater than is needed to achieve the target composition; annealing the absorber film; and removing excess Ag from the absorber film. A solar cell and method for fabrication thereof are also provided.

Inventors:
; ;
Issue Date:
Research Org.:
International Business Machines Corp., Armonk, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1482822
Patent Number(s):
10079321
Application Number:
15/198,795
Assignee:
International Business Machines Corporation (Armonk, NY)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
EE0006334
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Jun 30
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Gershon, Talia S., Gordon, Michael S., and Lee, Yun Seog. Technique for achieving large-grain Ag.sub.2ZnSn(S,Se).sub.4thin films. United States: N. p., 2018. Web.
Gershon, Talia S., Gordon, Michael S., & Lee, Yun Seog. Technique for achieving large-grain Ag.sub.2ZnSn(S,Se).sub.4thin films. United States.
Gershon, Talia S., Gordon, Michael S., and Lee, Yun Seog. Tue . "Technique for achieving large-grain Ag.sub.2ZnSn(S,Se).sub.4thin films". United States. https://www.osti.gov/servlets/purl/1482822.
@article{osti_1482822,
title = {Technique for achieving large-grain Ag.sub.2ZnSn(S,Se).sub.4thin films},
author = {Gershon, Talia S. and Gordon, Michael S. and Lee, Yun Seog},
abstractNote = {Techniques for increasing grain size in AZTSSe absorber materials are provided. In one aspect, a method for forming an absorber film on a substrate includes: contacting the substrate with an Ag source, a Zn source, a Sn source, and an S source and/or an Se source under conditions sufficient to form the absorber film on the substrate having a target composition of: Ag.sub.XZn.sub.YSn(S,Se).sub.Z, wherein 1.7<2.2, 0.9<1.3, and 3.5<4.5, and including an amount of the Ag source that is from about 10% to about 30% greater than is needed to achieve the target composition; annealing the absorber film; and removing excess Ag from the absorber film. A solar cell and method for fabrication thereof are also provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {9}
}

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Works referenced in this record:

Coevaporation of Cu2ZnSnSe4 thin films
journal, August 2010


The effect of Ag incorporation on the phase stability, crystallinity and band structure on the (Cu,Ag)2ZnSn(S,Se)4 kesterite solar cells
conference, June 2015


Optimization of CIGS-Based PV Device through Antimony Doping
journal, January 2010


The Role of Sodium as a Surfactant and Suppressor of Non-Radiative Recombination at Internal Surfaces in Cu 2 ZnSnS 4
journal, August 2014