| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 |
25권 2호 |
| 발표분야 |
포스터-고분자 |
| 제목 |
Electron Transport Layers Based on Oligo(Ethylene Glycol)-Incorporated Polymers Enabling Reproducible Fabrication of High-Performance and Stable Organic Solar Cells |
| 초록 |
Two naphthalene diimide (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 them on PM6:Y6 with eco-friendly water/ethanol mixtures, 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 |
김창균, 이승진, 김영웅, 김동욱, 정다현, 김건우, 김진석, 김범준
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| 소속 |
한국과학기술원 |
| 키워드 |
Electron transport layer; Organic solar cell; Reproducible performances
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| E-Mail |
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