| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO)) |
| 권호 |
44권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Thermally stable and highly efficient organic-inorganic hybrid planar perovskite solar cells by interface engineering |
| 초록 |
We reported a highly effective interface engineering method by employing a zwitterion molecule to SnO2 electron transport layer (ETL) and a dopant-free hole transport layer (HTL). The zwitterion plays several important roles: (1) shifting of the SnO2 work function and built-in potential increase, (2) pulling electrons from perovskite to ETL, (3) preventing back transfer of electrons and suppress charge recombination. (4) passivating Pb–I antisite defects. With these properties, the PSC with Spiro-OMeTAD obtained a 21.43% efficiency. In addition, the PSC with the dopant-free HTL exhibited a 20.5% efficiency using green solvents. The resulting PSCs without encapsulation exhibited outstanding thermal stability. Accordingly, this work suggests that the use of a modified ETL and a dopant-free HTL is a promising strategy to overcome the thermal instability issue of planar-PSCs |
| 저자 |
최현태, 최경원, 김태현, 김도현, 정다솔, 박태호
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| 소속 |
포항공과대 |
| 키워드 |
Zwitterion; electron transport layer; a dopant free hole transport layer
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| E-Mail |
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