| Autor: |
Guo, Zhanglin, Jena, Ajay Kumar, Takei, Izuru, Ikegami, Masashi, Ishii, Ayumi, Numata, Youhei, Shibayama, Naoyuki, Miyasaka, Tsutomu |
| Předmět: |
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| Zdroj: |
Advanced Functional Materials; 10/14/2021, Vol. 31 Issue 42, p1-9, 9p |
| Abstrakt: |
To abate the issue of moisture-assisted phase transition of CsPbI2Br, caused by hygroscopic dopants used in the hole-transporting material (HTM), developing dopant-free HTMs is necessary. In this work, a new polymer, PDTDT, is developed as a dopant-free HTM for CsPbI2Br solar cells, and the device performance and stability are systematically compared with cells employing dopant-free P3HT. CsPbI2Br solar cells using PDTDT show an efficiency of 17.36% with VOC of 1.42 V and FF of 81.29%, which is one of the highest values for CsPbI2Br cells. Moreover, a record-high efficiency of34.20% with VOC of 1.14 V under 200 lux indoor light illumination and efficiency of 14.54% (certified efficiency of 13.86%) for a 1 cm2 device under one sun are accomplished. Importantly, PDTDT shows superior/comparable device stability to P3HT, promising its potential to be an alternative to popular doped Spiro-OMeTAD and P3HT HTM. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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