|
Hokkaido University Collection of Scholarly and Academic Papers >
Research Institute for Electronic Science >
Peer-reviewed Journal Articles, etc >
Enhanced light absorption in thin-film solar cells with light propagation direction conversion
| Title: | Enhanced light absorption in thin-film solar cells with light propagation direction conversion |
| Authors: | Suemune, Ikuo Browse this author →KAKEN DB |
| Keywords: | Diffraction gratings | | Gratings | | Absorption | | Solar energy |
| Issue Date: | 25-Apr-2013 |
| Publisher: | Optical Society of America |
| Journal Title: | Optics Express |
| Volume: | 21 |
| Issue: | S3 |
| Start Page: | A539 |
| End Page: | A547 |
| Publisher DOI: | 10.1364/OE.21.00A539 |
| Abstract: | Enhancement of optical absorption in thin-film solar cells (TF-SCs) has been the long-lasting issue to achieve high efficiencies. Grating couplers have been studied for the conversion of incident light into guided modes propagating along TF-SCs to extend optical path for higher optical absorption. However the wavelength band for the efficient conversion remained relatively narrow and the overall improvement of TF-SC efficiencies has been limited. This paper demonstrates that the grating height design as well as the phase matching condition is important for the enhancement of optical absorption in TF-SCs with the calculation of short-circuit currents as a figure of merit for optimization. The influence of the light absorption coefficients and grating coupling strengths on the light absorption bandwidth is also discussed. |
| Rights: | © 2013 Optical Society of America, Inc. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/52940 |
| Appears in Collections: | 電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 末宗 幾夫
|
