Method and apparatus for measuring photoelectric conversion...

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy

Reexamination Certificate

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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.

REFERENCES:
patent: 4049963 (1977-09-01), Kuehnle
patent: 4730158 (1988-03-01), Kasai et al.
patent: 6169414 (2001-01-01), Yoshino et al.
patent: 6271462 (2001-08-01), Tsuzuki et al.
patent: 6639421 (2003-10-01), Yoshino et al.
patent: 1204059 (1999-01-01), None
patent: 57 179674 (1982-05-01), None
Troy Glatfelter, et al., “A Method For Determining The Conversion Efficiency Of Multiple-Cell Photovoltaic Devices”, IEEE, pp. 1187-1193 (1987).

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