Highly transparent solar cells｜Development of highly transparent solar cells using TMD
We have successfully developed highly transparent solar cells by transparentizing the electrodes of our proprietary Schottky-type TMD (Transition Metal Dichalcogenide) solar cells. Utilizing ITO (Indium Tin Oxide) as the transparent electrode and precisely controlling the Schottky barrier between ITO and TMD, we achieved clear solar power generation of 420 pW from a 1 cm² substrate. Moreover, the measured average visible light transmittance of this solar cell is 79%, demonstrating an exceptionally high level of transparency. This technology has the potential for widespread societal implementation, including energy harvesting from currently non-generating surfaces such as window glass and car windshields, and we are actively pursuing further research in this direction.
Scientific Reports, Vol. 12, No. 11315, pp. 1-8, 2022.7.4.
https://www.tohoku.ac.jp/japanese/newimg/pressimg/tohokuuniv-press20220712_03web_tmd.pdf
Highly transparent solar cells｜Development of Schottky type solar cells with TMD
We are dedicated to developing transparent solar cells by maximizing the unique feature of TMDs, which are semiconductors at the atomic level. Initially, we focused on Schottky-type solar cells, which are easy to scale up. We conducted a demonstration of TMD Schottky solar cells, optimizing the electrode materials on both ends of the TMD. Through device design that separates functions, with one side facilitating charge separation with a high Schottky barrier and the other side serving as a low Schottky barrier for current collection, we achieved the highest overall power generation efficiency (0.7%) for TMD solar cells with a few layers or less.
Scientific Reports, Vol. 7, No. 11967, pp. 1-10, 2017.9.20.
https://www.tohoku.ac.jp/japanese/newimg/pressimg/tohokuuniv-press20170919_02web.pdf
