Colloidal InSb Quantum Dots/Organic Integrated Bulk Heterojunction for Fast and Sensitive Near‐Infrared Photodetectors
نویسندگان
چکیده
It remains urgent to integrate conductive InSb colloidal quantum dots (CQDs) for sensitive and fast near-infrared (NIR) photodetection applications. Herein, nanocrystallized CQDs (<12 nm in diameter) have been successfully obtained via hot-injection procedure, demonstrated a very narrow absorption peak centered at 1406 with full width half maximum (FWHM) of 10.3 broader 1702 nm, indicating strong quantum-confined effect. After integrating these [6,6]-phenyl C61-butyric acid methyl ester (PCBM) polymeric triphenyldiamine (poly(N,N′-diphenylben-zidine diphenylether), poly-TPD) bulk junction, the Si/SiO2/InSb CQDs:PCBM:poly-TPD/Ag photodetector has reached long-wavelength response up 1400 time (<80 ms), superior on/off ratio. In specific, charge carriers can be effectively transported due favorable energy alignment interpenetrating network formed inorganic/organic blend films. The work provides new strategy synthesize high-quality CQD reveal its starting point toward low-cost, practical, next-generation NIR detection.
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ژورنال
عنوان ژورنال: Advanced photonics research
سال: 2022
ISSN: ['2699-9293']
DOI: https://doi.org/10.1002/adpr.202100305