Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Reexamination Certificate
2005-04-05
2005-04-05
Cuneo, Kamand (Department: 2829)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Using radiant energy
C324S1540PB
Reexamination Certificate
active
06876187
ABSTRACT:
For the multi-source method suitable to measure the photoelectric conversion characteristics of a stacked solar cell, the light-receiving area of the solar cell to be measured is limited to the minimal area of laboratory level, and it is hard to measure a cell, module, or array having an area more than 400 cm2. To cope with this problem, the irradiance of irradiation light is measured or adjusted, the current vs. voltage characteristic of a reference cell is measured, and the current vs. voltage characteristic of a sample cell is measured. Next, the current vs. voltage characteristic of the reference cell in standard test conditions is compared with the measurement result of the current vs. voltage characteristic of the reference cell, thereby obtaining a shift of the measurement result from the standard test condition on the basis of the shift of the irradiation light from the standard test condition. On the basis of the obtained shift of the measurement result, the measurement result of the current vs. voltage characteristic of the sample cell is corrected, and the photoelectric conversion characteristics of the sample cell are obtained.
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Troy Glatfelter, et al., “A Method For Determining The Conversion Efficiency Of Multiple-Cell Photovoltaic Devices”, IEEE, pp. 1187-1193 (1987).
Cuneo Kamand
Nguyen Tung X.
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