| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 봄 (04/24 ~ 04/26, 제주국제컨벤션센터) |
| 권호 |
25권 1호, p.445 |
| 발표분야 |
에너지 환경(Energy and Environment) |
| 제목 |
Improved Efficiency and Stability of Quasi-2D Tin-Based Perovskite Solar Cells with Formamidinium Thiocyanate Additive |
| 초록 |
Tin-based perovskite solar cells have been considered to be promising alternatives for toxic Pb-based perovskite solar cells due to their comparable optoelectronic properties as well as relatively lower toxicity. However, their poor oxidation stability has been a main obstacle for efficient tin-based perovskite solar cells. Herein, we fabricated quasi-2D tin-based perovskite solar cells with improved stability and studied the effects of formamidinium thiocyanate (FASCN) additive which can interact with Sn2+ ion to suppress oxidation. The carrier density of the device with FASCN was reduced to 6.67×1015 cm-3 from 2.17×1016 cm-3. Moreover, morphological improvement was observed with FASCN. The best-performing sn-based perovskite solar cells showed the highest effciency of 8.17%, which retains over 90% of its initial efficiency over 1000 hours in a glovebox filled with nitrogen. These results demonstrate a viable approach for efficient tin-based perovskite solar cells. |
| 저자 |
김홍기1, 이윤호2, 오준학3
|
| 소속 |
1포항공과대, 2나노기반 소프트일렉트로닉스 연구단 (CASE) / 서울대, 3서울대 |
| 키워드 |
에너지 환경 |
| E-Mail |
|
| 원문파일 |
초록 보기 |
