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Title: Interdigitated photovoltaic power conversion device

Abstract

A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact gridmore » of one cell to the back contact grid of an adjacent cell at the top surface of the device. 15 figs.« less

Inventors:
; ;
Issue Date:
Research Org.:
Midwest Research Institute
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
350313
Patent Number(s):
5,897,715
Application Number:
PAN: 8-858,422
Assignee:
Midwest Research Inst., Kansas City, MO (United States) PTO; SCA: 140600; PA: EDB-99:061913; SN: 99002098264
DOE Contract Number:  
AC36-83CH10093
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 27 Apr 1999
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; PHOTOVOLTAIC POWER SUPPLIES; DESIGN; CHARGE COLLECTION; BACK CONTACT SOLAR CELLS; ELECTRIC CONTACTS

Citation Formats

Ward, J.S., Wanlass, M.W., and Gessert, T.A. Interdigitated photovoltaic power conversion device. United States: N. p., 1999. Web.
Ward, J.S., Wanlass, M.W., & Gessert, T.A. Interdigitated photovoltaic power conversion device. United States.
Ward, J.S., Wanlass, M.W., and Gessert, T.A. Tue . "Interdigitated photovoltaic power conversion device". United States.
@article{osti_350313,
title = {Interdigitated photovoltaic power conversion device},
author = {Ward, J.S. and Wanlass, M.W. and Gessert, T.A.},
abstractNote = {A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device. 15 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {4}
}