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Title: Current-matched high-efficiency, multijunction monolithic solar cells

Abstract

The efficiency of a two-junction (cascade) tandem photovoltaic device is improved by adjusting (decreasing) the top cell thickness to achieve current matching. An example of the invention was fabricated out of Ga.sub.0.52 In.sub.0.48 P and GaAs. Additional lattice-matched systems to which the invention pertains include Al.sub.x Ga.sub.1-x /GaAS (x= 0.3-0.4), GaAs/Ge and Ga.sub.y In.sub.l-y P/Ga.sub.y+0.5 In.sub.0.5-y As (0<5).

Inventors:
 [1];  [2]
  1. Lakewood, CO
  2. Golden, CO
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
OSTI Identifier:
868827
Patent Number(s):
5223043
Assignee:
United States of America as represented by United States (Washington, DC)
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:  
AC02-83CHI0093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
current-matched; high-efficiency; multijunction; monolithic; solar; cells; efficiency; two-junction; cascade; tandem; photovoltaic; device; improved; adjusting; decreasing; top; cell; thickness; achieve; current; matching; example; fabricated; 52; 48; gaas; additional; lattice-matched; systems; pertains; 1-x; 3-0; l-y; 5-y; cell thickness; solar cell; solar cells; photovoltaic device; tandem photovoltaic; monolithic solar; top cell; /136/

Citation Formats

Olson, Jerry M, and Kurtz, Sarah R. Current-matched high-efficiency, multijunction monolithic solar cells. United States: N. p., 1993. Web.
Olson, Jerry M, & Kurtz, Sarah R. Current-matched high-efficiency, multijunction monolithic solar cells. United States.
Olson, Jerry M, and Kurtz, Sarah R. Fri . "Current-matched high-efficiency, multijunction monolithic solar cells". United States. https://www.osti.gov/servlets/purl/868827.
@article{osti_868827,
title = {Current-matched high-efficiency, multijunction monolithic solar cells},
author = {Olson, Jerry M and Kurtz, Sarah R},
abstractNote = {The efficiency of a two-junction (cascade) tandem photovoltaic device is improved by adjusting (decreasing) the top cell thickness to achieve current matching. An example of the invention was fabricated out of Ga.sub.0.52 In.sub.0.48 P and GaAs. Additional lattice-matched systems to which the invention pertains include Al.sub.x Ga.sub.1-x /GaAS (x= 0.3-0.4), GaAs/Ge and Ga.sub.y In.sub.l-y P/Ga.sub.y+0.5 In.sub.0.5-y As (0<5).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

Patent:

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