| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Highly Efficient and Stable Hybrid Perovskite Solar Cells by Introducing Novel IDTT-based Small Molecule Additive |
| 초록 |
The defects existing in the organic-inorganic halide perovsktie films could bring about an adverse effect to both stability and efficiency of perovskite solar cells (PSCs). Here, the novel indacenodithieno[3,2-b]thiophene-based small molecule, IDTT-ThCz, was introduced into the perovskite film during antisolvent treatment step. The p-type characeteristics of the IDTT-ThCz molecule and smooth perovskite film contributed to efficient charge extraction from perovskite. In addition, the IDTT-ThCz molecule interacted with perovskite precursors and suppressed the decomposition of perovskite, passivating the defect states and reducing the defect density. As a consequence, the highest PCE of 22.5% was achieved for IDTT-ThCz treated PSCs owing to these improvements. Furthermore, the stability of PSCs improved as well, maintaining up to 90% of their initial efficiencies after 458h storage in thermal condition (85 degree) and up to 70% after 25000s of continuous illumination. |
| 저자 |
최현태, 류승운, 이대환, 민지현, 윤선희, 박태호
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| 소속 |
포항공과대 |
| 키워드 |
Perovskite solar cell; additive engineering; defect passivation; long-term stability; IDTT core
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| E-Mail |
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