CN
- Hysteresis-free perovskite solar cells made of potassium-doped organometal halide perovskite.
Hysteresis-free perovskite solar cells made of potassium-doped organometal halide perovskite.
Scientific reports (2017-09-25)
Zeguo Tang, Takeru Bessho, Fumiyasu Awai, Takumi Kinoshita, Masato M Maitani, Ryota Jono, Takurou N Murakami, Haibin Wang, Takaya Kubo, Satoshi Uchida, Hiroshi Segawa
PMID28939887
ABSTRACT
Potassium-doped organometal halide perovskite solar cells (PSCs) of more than 20% power conversion efficiency (PCE) without I-V hysteresis were constructed. The crystal lattice of the organometal halide perovskite was expanded with increasing of the potassium ratio, where both absorption and photoluminescence spectra shifted to the longer wavelength, suggesting that the optical band gap decreased. In the case of the perovskite with the 5% K
MATERIALS