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Title: Characterization of Primary Carrier Transport Properties of the Light-Harvesting Chalcopyrite Semiconductors CuIn(S 1–xSe x) 2

We report the carrier transport properties of CuIn(S 1-xSe x) 2 (0 ≤ x ≤ 1), a promising chalcopyrite semiconductor series for solar water splitting. A low concentration Mg dopant is used to decrease the carrier resistivity through facilitating bulk p-type transport at ambient temperature. Temperature-dependent resistivity measurements reveal a four-order magnitude decrease in bulk electrical resistivity (from 10 3 to 10 –1 Ohm cm) for 1% Mg-doped CuIn(S 1–xSe x) 2 as x increases from 0 to 1. Hall effect measurements at room temperature reveal p-type majority carrier concentrations that vary from 10 15 to 10 18 cm –3 and mobilities of approximately 1–10 cm 2 V –1 s –1. These results provide insights into the fundamental carrier transport properties of CuIn(S 1–xSe x) 2 and will be of value in optimizing these materials further for photoelectrochemistry applications.
Authors:
 [1] ;  [1] ;  [1] ; ORCiD logo [1]
  1. Princeton Univ., NJ (United States). Dept. of Chemistry
Publication Date:
Grant/Contract Number:
SC0002133; AC02-05CH11231; F602-98ER45706
Type:
Published Article
Journal Name:
Journal of Physical Chemistry. C
Additional Journal Information:
Journal Volume: 121; Journal Issue: 32; Journal ID: ISSN 1932-7447
Publisher:
American Chemical Society
Research Org:
Princeton Univ., NJ (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 30 DIRECT ENERGY CONVERSION; p-type semiconductors; photoelectrochemistry; chalcopyrites; hydrogen from water
OSTI Identifier:
1374233
Alternate Identifier(s):
OSTI ID: 1418173