Laser beam apparatus and method for analyzing solar cells
Abstract
A laser beam apparatus and method for analyzing, inter alia, the current versus voltage curve at the point of illumination on a solar cell and the open circuit voltage of a solar cell. The apparatus incorporates a lock-in amplifier, and a laser beam light chopper which permits the measurement of the AC current of the solar cell at an applied DC voltage at the position on the solar cell where the cell is illuminated and a feedback scheme which permits the direct scanning measurements of the open circuit voltage. The accuracy of the measurement is a function of the intensity and wavelength of the laser light with respect to the intensity and wavelength distribution of sunlight and the percentage the dark current is at the open circuit voltage to the short circuit current of the solar cell.
- Inventors:
-
- Lawrenceville, NJ
- Issue Date:
- Research Org.:
- RCA Labs., Princeton, NJ (USA)
- OSTI Identifier:
- 863588
- Patent Number(s):
- 4205265
- Assignee:
- RCA Corporation (New York, NY)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H02 - GENERATION H02S - GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
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:
- EY-76-C-03-1286
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- laser; beam; apparatus; method; analyzing; solar; cells; alia; current; versus; voltage; curve; illumination; cell; circuit; incorporates; lock-in; amplifier; light; chopper; permits; measurement; applied; dc; position; illuminated; feedback; scheme; direct; scanning; measurements; accuracy; function; intensity; wavelength; respect; distribution; sunlight; percentage; dark; beam apparatus; circuit voltage; solar cell; laser beam; laser light; solar cells; dc voltage; beam light; lock-in amplifier; dark current; /324/136/
Citation Formats
Staebler, David L. Laser beam apparatus and method for analyzing solar cells. United States: N. p., 1980.
Web.
Staebler, David L. Laser beam apparatus and method for analyzing solar cells. United States.
Staebler, David L. Tue .
"Laser beam apparatus and method for analyzing solar cells". United States. https://www.osti.gov/servlets/purl/863588.
@article{osti_863588,
title = {Laser beam apparatus and method for analyzing solar cells},
author = {Staebler, David L},
abstractNote = {A laser beam apparatus and method for analyzing, inter alia, the current versus voltage curve at the point of illumination on a solar cell and the open circuit voltage of a solar cell. The apparatus incorporates a lock-in amplifier, and a laser beam light chopper which permits the measurement of the AC current of the solar cell at an applied DC voltage at the position on the solar cell where the cell is illuminated and a feedback scheme which permits the direct scanning measurements of the open circuit voltage. The accuracy of the measurement is a function of the intensity and wavelength of the laser light with respect to the intensity and wavelength distribution of sunlight and the percentage the dark current is at the open circuit voltage to the short circuit current of the solar cell.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1980},
month = {Tue Jan 01 00:00:00 EST 1980}
}