| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
대학원생 구두발표(영어발표, 발표15분) |
| 제목 |
Thermally Stable and Highly Efficient Planar Perovskite Solar Cells Using a Zwitterion-Modified SnO2 Electron Transport Layer |
| 초록 |
Tin oxide (SnO2) is a promising electron transport layer in planar perovskite solar cells (P-PSCs) due to its excellent electronic properties. SnO2-based devices show the highest PCE among planar structure devices, but it is still low compared to the mesoporous PSCs. We develop a facile interface engineering to enhance the efficiency and the thermal stability of the P-PSCs. The modified SnO2 shows improved conductivity, charge extraction ability and high recombination resistance. The efficiencies of 21.43% and 20.5% were obtained for the device with doped Spiro-OMeTAD and with dopant-free asy-PBTBDT, respectively. The devices with modified SnO2 were tested under mild (humidity of 25%) and harsh conditions (humidity of 85%; temperature of 85°C). They show excellent stability, thus, our newly developed method ensures highly efficient and thermal stable P-PSCs. |
| 저자 |
최경원, 강경호, 박철웅, 임채성, 박성진, 박태호
|
| 소속 |
POSTECH |
| 키워드 |
Perovskite solar cell; Thermal stability; ETL; Interface engineering
|
| E-Mail |
|
