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Title: Photovoltaic cell and production thereof

Abstract

An efficient photovoltaic cell, and its process of manufacture, is disclosed wherein the back surface p-n junction is removed from a doped substrate having an oppositely doped emitter layer. A front surface and edges and optionally the back surface periphery are masked and a back surface etch is performed. The mask is not removed and acts as an anti-reflective coating, a passivating agent, or both. The photovoltaic cell retains an untextured back surface whether or not the front is textured and the dopant layer on the back surface is removed to enhance the cell efficiency. Optionally, a back surface field is formed.

Inventors:
 [1];  [2]
  1. Gaithersburg, MD
  2. Bangalore, IN
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
984454
Patent Number(s):
7402448
Application Number:
10/767,625
Assignee:
BP Corporation North America Inc. (Warrenville, IL)
Patent Classifications (CPCs):
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
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
AC36-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY

Citation Formats

Narayanan, Srinivasamohan, and Kumar, Bikash. Photovoltaic cell and production thereof. United States: N. p., 2008. Web.
Narayanan, Srinivasamohan, & Kumar, Bikash. Photovoltaic cell and production thereof. United States.
Narayanan, Srinivasamohan, and Kumar, Bikash. Tue . "Photovoltaic cell and production thereof". United States. https://www.osti.gov/servlets/purl/984454.
@article{osti_984454,
title = {Photovoltaic cell and production thereof},
author = {Narayanan, Srinivasamohan and Kumar, Bikash},
abstractNote = {An efficient photovoltaic cell, and its process of manufacture, is disclosed wherein the back surface p-n junction is removed from a doped substrate having an oppositely doped emitter layer. A front surface and edges and optionally the back surface periphery are masked and a back surface etch is performed. The mask is not removed and acts as an anti-reflective coating, a passivating agent, or both. The photovoltaic cell retains an untextured back surface whether or not the front is textured and the dopant layer on the back surface is removed to enhance the cell efficiency. Optionally, a back surface field is formed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {7}
}

Patent:

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