Results of conference on characteristics of lithium-doped silicon solar cells and techniques required for fabrication indicate that output of cells has been improved to point where cells exhibit radiation resistance superior to those currently in use, and greater control and reproducibility of cell processing have been achieved

Berman, P. A.

English

NASA Technical Reports Server

November 1970	 Brief 70-10585 
NASA TECH BRIEF 
NASA Tech Briefs announce new technology derived from the U .S. space program. They are issued to encourage commercial -
	 - 
application. Tech-Briefs are available on a subscription basis from the Clearinghouse for Federal Scientific and Technical 
Information, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Division, NASA, Code UT, Washington, D.C. 20546. 
Silicon Solar Cells Improved by Lithium Doping 
Significant progress has been made recently in 
understanding many of the characteristics of lithium-
doped solar cells and in the techniques required to 
fabricate uniform, reproducible items. 
In an effort to bring together the findings of scien-
tists working in this field, a conference was recently 
held at which eight papers were presented covering 
development of the lithium-doped silicon solar cell. 
Studies presented included those on fabrication tech-
niques, the effects of dopants on the radiation sensi-
tivity of silicon, the annealing of electron damage in 
lithium-doped silicon as a function of temperature, 
and electrical studies made of electron-irradiated 
lithium-containing silicon and silicon solar cells. 
In summary, the output for lithium-containing solar 
cells has been improved to the point where the cells 
exhibit radiation resistance superior to that exhibited 
by state-of-the-art cells presently in use, and far 
superior to that exhibited previously by lithium-con-
taining solar cells. Significant improvement has also 
been obtained in understanding the effects of materials 
and process parameters on the resultant cell character-
istics, which result in greater flexibility of cell design
and greater capability for optimization of cell design 
for specific mission requirements. Greater control 
and reproducibility of cell processing have been 
achieved. 
Note: 
The following documentation may be obtained 
from:
Clearinghouse for Federal Scientific 
and Technical Information 
Springfield, Virginia 22151 - 
Single document price $3.00 
(or microfiche $0.65) 
Reference: 
NASA-CR- 106770 (N70-12104), Proceed-
ings of the Conference on Effects of Lithium 
Doping on Silicon Solar Cells 
Source: P. A. Berman of
Caltech/JPL
under contract to
NASA Pasadena Office 
(N PO-11390) 
Category 04 
This document was prepared under the sponsorship of the National 	 Government assumes any liability resulting from the use of -the 
Aeronautics and Space Administration. Neither the United States	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United -States 	 will be free from privately owned -rights.
https://ntrs.nasa.gov/search.jsp?R=19700000567 2020-03-17T00:38:40+00:00Z


Silicon solar cells improved by lithium doping

Abstract

Similar works

Full text

Available Versions

NASA Technical Reports Server