2019 Volume 88 Issue 11 Pages 720-724
In recent years, the performance of organic solar cells for practical applications has been improved significantly. Of these, energy harvesting applications with indoor light are attracting interest due to the recent growth of IoT. Therefore, we have been working on a standardization of the evaluation method under indoor light mainly for organic solar cells, and JEITA JT 9101 was created by referring to the IEC 60904 standard. The standard defines three types of reference indoor light, and describes a method to evaluate the efficiency of a solar cell. We continue to develop the international standard.