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Title: Heterojunction solar cell with passivated emitter surface

A high-efficiency heterojunction solar cell wherein a thin emitter layer (preferably Ga.sub.0.52 In.sub.0.48 P) forms a heterojunction with a GaAs absorber layer. A passivating window layer of defined composition is disposed over the emitter layer. The conversion efficiency of the solar cell is at least 25.7%. The solar cell preferably includes a passivating layer between the substrate and the absorber layer. An anti-reflection coating is preferably disposed over the window layer.
Inventors:
 [1];  [2]
  1. (Lakewood, CO)
  2. (Golden, CO)
Issue Date:
OSTI Identifier:
869329
Assignee:
Midwest Research Institute (Kansas City, MO) NREL
Patent Number(s):
US 5316593
Contract Number:
AC02-83CH10093
Research Org:
MIDWEST RESEARCH INSTITUTE
Country of Publication:
United States
Language:
English
Subject:
heterojunction; solar; cell; passivated; emitter; surface; high-efficiency; layer; preferably; 52; 48; forms; gaas; absorber; passivating; window; defined; composition; disposed; conversion; efficiency; 25; substrate; anti-reflection; coating; window layer; heterojunction solar; emitter layer; conversion efficiency; solar cell; absorber layer; anti-reflection coating; junction solar; preferably disposed; passivating layer; defined composition; gaas absorber; emitter surface; /136/257/