Improvement of Solar Cell Efficiency
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2013 by IJETT Journal|
|Year of Publication : 2013|
|Authors : K.Vinil|
K.Vinil. "Improvement of Solar Cell Efficiency". International Journal of Engineering Trends and Technology (IJETT). V4(5):1398-1402 May 2013. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group.
One way of improving the efficiency of solar cells is to subdivide the broad solar spec trum into smaller energy ranges and to convert each range with a cell of appropriately matched bandgap. The most common approach to implementing this idea has been to use a monolithic or mechanical stack of cells arranged in order of increasing bandgap, wi th the highest bandgap cell uppermost. This provides automatic filtering of incident sunlight so that each cell absorbs and converts the optimal spectral range. The potential of an earlier experimental approach based on steering light in different waveleng th bands to non - stacked cells recently has been re - explored with good results. The present work extends this previous work by putting measurements on a more rigorous basis and by improving the ‘composite’ experimental efficiency of selected cells to beyond 43%, the highest reported to date for any combination of photovoltaic devices
1 .Green MA , Zhao J, Wang A, Reece PJ, Gal M. Efficient silicon light emitting diodes. Nature 2001; 412: 805 – 808.
2. King DL, Hansen BR, end Jackson JK. Sandia/NIST reference cell calibration procedure. Proceedingsof the 23rd IEEE Photovoltaic Specialists Conferen ce, Louisville, May, 1993; 1095 – 1101.
3. Bu ?cher K, Stiening R, Heidler K, Emery K, Field H, King D, Hansen B. Intercomparison of two primary reference cell calibration methods. Proceedingsof the 23rd IEEE Photovoltaic Specialists Conference, Louisville, May, 1993; 1188 – 1193 .
4. Green MA, Emery K, Hishikawa Y, Warta W. Solar cell efficiency tables (version 33). Progress in Photovoltaics: Research and Applications 2009; 17: 85 – 94.
5. Goetzberger A. Private communication. Circa 1990 .
6 .Jackson E D. Areas f or improvement of semiconductor solar energy converter. In Transactions of the conference on the use of solar energy. University of Arizona Press: Tucson, Arizona, 1955; 122.
7 . Jackson ED. Solar Energy Converter. US Patent 2,949,498 August 16, 1960.
high efficiency; concentrator cells