Enhanced Device Efficiency of Bilayered Inverted Organic Solar Cells Based on Photocurable P3HTs with a Light‐Harvesting ZnO Nanorod Array |
| |
| Authors: | Sehwan Kim Joo Hwan Koh Xu Yang Won Seok Chi Chihyun Park Jung Woo Leem Byeonggwan Kim Seogjae Seo Yuna Kim Jae Su Yu Jong Hak Kim Eunkyoung Kim |
| |
| Affiliation: | 1. Department of Chemical and Biomolecular Engineering, Yonsei University, Seodaemun‐gu, Seoul, Korea;2. Active Polymer Center for Pattern Integration (APCPI), Yonsei University, Seodaemun‐gu, Seoul, Korea;3. Department of Electronics and Radio Engineering, Kyung Hee University, Yongin‐si, Gyeonggi‐do, Korea |
| |
| Abstract: | Periodically patterned zinc oxide nanorod (P‐ZnO NR) layers are directly prepared from a pre‐patterned ZnO seed layer using a polydimethylsiloxane (PDMS) elastomeric stamp and then applied in inverted organic photovoltaic devices (IOPVs). The IOPV is assembled with a hydrothermally grown zinc oxide nanorod patterns with a (100) preferential crystal orientation as an electron transport buffer layer (ETBL) and photoactive bilayer consisting of methacylate end‐functionalized poly(3‐hexylthiophene) (P3HT‐MA), phenyl‐C60‐butyric acid methyl ester (PC60BM) and indene‐C60 bis‐adduct (IC60BA). In te IOPVs, the P‐ZnO NR is found to induce efficient light harvesting and the photocrosslinkable P3HTs afford solution‐processed bilayer architecture in IOPVs to show improved device stability and performance (PCEmax= 5.95%), as the bilayered structure allowed direct exciton splitting, thus reducing the charge recombination. |
| |
| Keywords: | bilayered structures nanopatterning ZnO nanorods light harvesting inverted solar cells |
|
|
