Figure 6. PL of the P3HT:PCBM blends (a) without ETL; (b) with addition of a N-ZnO compact layer as an ETL; (c) ZnO nanowires array as an ETL [50]

From

Review of Recent Advances of ZnO Nanowires Based Sensors

Ahmed M. Nahhas

American Journal of Nanomaterials. 2020, 8(1), 18-31 doi:10.12691/ajn-8-1-3