skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Chemical control of recombination at grain boundaries and liquid interfaces: Electrical power and hydrogen generating photoelectrochemical cells

Abstract

Recombination of carriers at a surface or at a grain boundary of a semiconductor is associated with the presence of chemical bonds that are weaker than those in the bulk. Upon strengthening these bonds, by reacting the interface with a strongly bound impurity, the rate of recombination is drastically reduced. For example, a 10/sup 3/-fold increase in EBIC charge collection efficiency for the polycrystalline p--InP/Ti Schottky junction and a corresponding increase in the efficiency of the photoelectrochemical cell polycrystalline p--InP/VCl/sub 3/--VCl/sub 2/--HCl/C are observed when silver is chemisorbed on the semiconductor grain boundaries. Chemical control of carrier recombination at semiconductor solution interfaces and grain boundaries results in 12 % efficient monocrystalline and 8 % efficient thin film polycrystalline solar cells, that generate either electrical power or hydrogen.

Authors:
Publication Date:
Research Org.:
Bell Laboratories, Murray Hill, New Jersey 07974
OSTI Identifier:
5166846
Resource Type:
Journal Article
Journal Name:
J. Vac. Sci. Technol.; (United States)
Additional Journal Information:
Journal Volume: 21:2
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; INDIUM PHOSPHIDE SOLAR CELLS; EFFICIENCY; PASSIVATION; SEMICONDUCTOR MATERIALS; GRAIN BOUNDARIES; RECOMBINATION; SORPTIVE PROPERTIES; CHEMICAL BONDS; CHEMISORPTION; FILMS; HYDROGEN GENERATORS; INDIUM PHOSPHIDES; INTERFACES; PHOTOELECTROCHEMICAL CELLS; SILVER; SOLAR ENERGY CONVERSION; TITANIUM; VANADIUM CHLORIDES; CHEMICAL REACTIONS; CHLORIDES; CHLORINE COMPOUNDS; CONVERSION; CRYSTAL STRUCTURE; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; ELEMENTS; ENERGY CONVERSION; EQUIPMENT; GAS GENERATORS; HALIDES; HALOGEN COMPOUNDS; INDIUM COMPOUNDS; MATERIALS; METALS; MICROSTRUCTURE; PHOSPHIDES; PHOSPHORUS COMPOUNDS; PHOTOELECTRIC CELLS; PHOTOVOLTAIC CELLS; PNICTIDES; SEPARATION PROCESSES; SOLAR CELLS; SOLAR EQUIPMENT; SORPTION; SURFACE PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; VANADIUM COMPOUNDS; 140501* - Solar Energy Conversion- Photovoltaic Conversion

Citation Formats

Heller, A. Chemical control of recombination at grain boundaries and liquid interfaces: Electrical power and hydrogen generating photoelectrochemical cells. United States: N. p., 1982. Web. doi:10.1116/1.571762.
Heller, A. Chemical control of recombination at grain boundaries and liquid interfaces: Electrical power and hydrogen generating photoelectrochemical cells. United States. doi:10.1116/1.571762.
Heller, A. Thu . "Chemical control of recombination at grain boundaries and liquid interfaces: Electrical power and hydrogen generating photoelectrochemical cells". United States. doi:10.1116/1.571762.
@article{osti_5166846,
title = {Chemical control of recombination at grain boundaries and liquid interfaces: Electrical power and hydrogen generating photoelectrochemical cells},
author = {Heller, A.},
abstractNote = {Recombination of carriers at a surface or at a grain boundary of a semiconductor is associated with the presence of chemical bonds that are weaker than those in the bulk. Upon strengthening these bonds, by reacting the interface with a strongly bound impurity, the rate of recombination is drastically reduced. For example, a 10/sup 3/-fold increase in EBIC charge collection efficiency for the polycrystalline p--InP/Ti Schottky junction and a corresponding increase in the efficiency of the photoelectrochemical cell polycrystalline p--InP/VCl/sub 3/--VCl/sub 2/--HCl/C are observed when silver is chemisorbed on the semiconductor grain boundaries. Chemical control of carrier recombination at semiconductor solution interfaces and grain boundaries results in 12 % efficient monocrystalline and 8 % efficient thin film polycrystalline solar cells, that generate either electrical power or hydrogen.},
doi = {10.1116/1.571762},
journal = {J. Vac. Sci. Technol.; (United States)},
number = ,
volume = 21:2,
place = {United States},
year = {1982},
month = {7}
}