| Autor: |
Xu, Xiaobao, Chueh, Chu‐Chen, Jing, Peifeng, Yang, Zhibin, Shi, Xueliang, Zhao, Ting, Lin, Lih Y., Jen, Alex K.‐Y. |
| Předmět: |
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| Zdroj: |
Advanced Functional Materials; 7/26/2017, Vol. 27 Issue 28, pn/a-N.PAG, 6p |
| Abstrakt: |
Photodetectors with ultrafast response are explored using inorganic/organic hybrid perovskites. High responsivity and fast optoelectronic response are achieved due to the exceptional semiconducting properties of perovskite materials. However, most of the perovskite-based photodetectors exploited to date are centered on Pb-based perovskites, which only afford spectral response across the visible spectrum. This study demonstrates a high-performance near-IR (NIR) photodetector using a stable low-bandgap Sn-containing perovskite, (CH3NH3)0.5(NH2CHNH2)0.5Pb0.5Sn0.5I3 (MA0.5FA0.5Pb0.5Sn0.5I3), which is processed with an antioxidant additive, ascorbic acid (AA). The addition of AA effectively strengthens the stability of Sn-containing perovskite against oxygen, thereby significantly inhibiting the leakage current. Consequently, the derived photodetector shows high responsivity with a detectivity of over 1012 Jones ranging from 800 to 970 nm. Such low-cost, solution processable NIR photodetectors with high performance show promising potential for future optoelectronic applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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