| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Electron Transporting Layers Based on OEG-Incorporated Polymers Enabling Reproducible Fabrication of High-Performance Organic Solar Cells |
| 초록 |
Two NDI-based polymers, P(NDIDEG-T) and P(NDITEG-T), incorporated with different lengths of oligoethylene glycol (OEG) side chains are used as electron transporting layers (ETLs). By depositing the ETLs on PM6:Y6 with eco-friendly water/ethanol co-solvents, a power conversion efficiency (PCE) of 15.43% is achieved, which is substantially higher than that of an OSC without an ETL (9.93%) and comparable to that of an OSC with a representative PFN-Br ETL (15.34%). The P(NDIDEG-T)–based OSCs show both enhanced PCEs and better reproducibility than their P(NDITEG-T)–based counterparts, which are attributed to the lower surface tension and improved film uniformity of the P(NDIDEG-T) ETL. Also, the P(NDIDEG-T) ETL realizes OSCs with higher storage stability and more thickness-tolerant performance than the P(NDITEG-T) and PFN-Br ETLs. Our study provides useful guidelines for the design of ETLs suitable for the fabrication of high-performance, reproducible, and stable OSCs. |
| 저자 |
이승진, 김영웅, 김동욱, 정다현, 김건우, 김진석, 김범준
|
| 소속 |
KAIST |
| 키워드 |
electron transporting layer; organic solar cells; oligo(ethylene glycol); eco-friendly processing; surface tension; storage stability
|
| E-Mail |
|
