Abstract
We demonstrate a visible transparent organic photovoltaic (OPV) with improved transmission and absorption based on tandem photonic crystals (TPCs) for greenhouse applications. The proposed device has an average transmittance of 40.3% in the visible range of 400–700 nm and a high quality transparency spectrum for plant growth with a crop growth factor of 41.9%, considering the weight of the AM 1.5G solar spectrum. Compared with the corresponding transparent OPV without photonic crystals, an enhancement of 20.7% in the average transmittance and of 24.5% in the crop growth factor are achieved. Detailed investigations reveal that the improved transmittance is attributed to the excitation of the optical Tamm state and the light interference effect in TPC. Concomitantly, the total absorption efficiency in the active layer of the designed TPC based transparent OPV reaches 51.5%, being 1.78% higher than that of the transparent OPV without PC and 76% of that of the opaque counterpart. The improved absorption originates from the Bragg forbidden reflectance of TPC. Overall, our proposal achieves the optimized utilization of sunlight by light manipulation of TPC.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Donggeon Han, Hoyeon Kim, Soohyun Lee, Myungsoo Seo, and Seunghyup Yoo
Opt. Express 18(S4) A513-A521 (2010)
Kevin H. Betts, Robert R. Parsons, and Michael J. Brett
Appl. Opt. 24(16) 2651-2654 (1985)
Byron Cocilovo, Aki Hashimura, Douglas J. Tweet, Tolis Voutsas, and Robert A. Norwood
Appl. Opt. 54(30) 8990-8998 (2015)