| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Hole Transport Material Meeting the Eco-Friendly Need with the Highest Efficiency, for Perovskite Solar Cell |
| 초록 |
Not only having proper energy levels and high mobility (μh), hole-transport materials (HTMs) should be processed in green solvents to meet the rising need for the environmentally friendly device fabrication. Despite several attempts to find such HTMs, none has been reported due to the limited solubility of HTMs in green solvents. Here, we are at hand with a green-solvent processable HTM, an asymmetric D-A polymer (asy-PBTBDT), which display remarkable solubility in 2-methylanisole, a food additive. Asy-PBTBDT meets the criteria of good HTM for perovskites as it demonstrates adequate energy levels and high μh (1.13 × 10–3 cm2/(V s)) without using dopants. The fabricated robust PSCs using asy-PBTBDT showed 18.3% efficiency without dopants and 20.0% efficiency with the use of dopants. This is the highest efficiencies achieved in n-i-p devices with and without dopants, and also the first case of a green-solvent processable hole-transport polymer. |
| 저자 |
정다솔, 이준우, 박상아, 김태현, 민지현, 박태호
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| 소속 |
POSTECH |
| 키워드 |
green-solvent processable; hole transport material; perovskite; asymmetry
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| E-Mail |
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