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Title: Photovoltaic panel having enhanced conversion efficiency stability

Abstract

A photovoltaic panel for converting light into electrical energy has enhanced energy conversion efficiency stability. The panel includes a photovoltaic device having an active region formed from a semiconductor material which exhibits an energy conversion efficiency stability directly related to the operating temperature of the device. The panel also includes means for maintaining the operating temperature of the device upon exposure to light at an elevated temperature above the ambient temperature external to the device. The active region semiconductor material is preferably an amorphous semiconductor alloy such as, for example, an amorphous silicon alloy. The operating temperature elevating means can include a thermal insulating material such as glass wool, styrofoam, or cork applied to the back side of the device to minimize heat conduction from the device. The panel can also include an enclosure for enclosing the device having a transparent cover overlying the device to seal the enclosure and provide a still air space adjacent the device. The panel is thereby arranged to maintain the operating temperature of the device at a temperature which is from about twenty degrees Centigrade to about one hundred and fifty degrees Centigrade above the ambient temperature external to the device.

Inventors:
Publication Date:
OSTI Identifier:
5904868
Patent Number(s):
US 4544798
Assignee:
Sovonics Solar Systems
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 31 Jul 1984; Other Information: PAT-APPL-636172
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; SILICON SOLAR CELLS; DESIGN; OPERATION; TEMPERATURE CONTROL; THERMAL INSULATION; AMBIENT TEMPERATURE; AMORPHOUS STATE; COVERINGS; ENERGY EFFICIENCY; OPACITY; SILICON ALLOYS; STABILITY; TEMPERATURE DEPENDENCE; ALLOYS; CONTROL; DIRECT ENERGY CONVERTERS; EFFICIENCY; EQUIPMENT; OPTICAL PROPERTIES; PHOTOELECTRIC CELLS; PHOTOVOLTAIC CELLS; PHYSICAL PROPERTIES; SOLAR CELLS; SOLAR EQUIPMENT; 140501* - Solar Energy Conversion- Photovoltaic Conversion

Citation Formats

Cannella, V D. Photovoltaic panel having enhanced conversion efficiency stability. United States: N. p., 1985. Web.
Cannella, V D. Photovoltaic panel having enhanced conversion efficiency stability. United States.
Cannella, V D. Tue . "Photovoltaic panel having enhanced conversion efficiency stability". United States.
@article{osti_5904868,
title = {Photovoltaic panel having enhanced conversion efficiency stability},
author = {Cannella, V D},
abstractNote = {A photovoltaic panel for converting light into electrical energy has enhanced energy conversion efficiency stability. The panel includes a photovoltaic device having an active region formed from a semiconductor material which exhibits an energy conversion efficiency stability directly related to the operating temperature of the device. The panel also includes means for maintaining the operating temperature of the device upon exposure to light at an elevated temperature above the ambient temperature external to the device. The active region semiconductor material is preferably an amorphous semiconductor alloy such as, for example, an amorphous silicon alloy. The operating temperature elevating means can include a thermal insulating material such as glass wool, styrofoam, or cork applied to the back side of the device to minimize heat conduction from the device. The panel can also include an enclosure for enclosing the device having a transparent cover overlying the device to seal the enclosure and provide a still air space adjacent the device. The panel is thereby arranged to maintain the operating temperature of the device at a temperature which is from about twenty degrees Centigrade to about one hundred and fifty degrees Centigrade above the ambient temperature external to the device.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {10}
}