TY - JOUR
T1 - Hybrid Bulk-Heterojunction of Colloidal Quantum Dots and Mixed-Halide Perovskite Nanocrystals for High-Performance Self-Powered Broadband Photodetectors
AU - Sulaman, Muhammad
AU - Yang, Shengyi
AU - Bukhtiar, Arfan
AU - Tang, Peiyun
AU - Zhang, Zhenheng
AU - Song, Yong
AU - Imran, Ali
AU - Jiang, Yurong
AU - Cui, Yanyan
AU - Tang, Libin
AU - Zou, Bingsuo
N1 - Publisher Copyright:
© 2022 Wiley-VCH GmbH.
PY - 2022/7/11
Y1 - 2022/7/11
N2 - Self-powered broadband photodetectors exhibit excellent self-powered and wide-band photoresponse from visible to infrared region and attract enormous attention due to their promising applications in imaging, sensing, and optical communication. PbSe colloidal quantum dots (CQDs) and halide perovskites nanocrystals (NCs) are commonly used for photodetectors due to their strong absorption capability, tunable bandgap, and high aspect ratio. However, due to suffering from low charge carrier mobility and high trap density, the performance of individual PbSe CQDs and perovskites-based photodetectors is not satisfactory. Integration of PbSe CQDs with inorganic mixed-halide perovskite nanomaterials can provide an opportunity to overcome these drawbacks. In this work, a hybrid nanocomposite of PbSe CQDs blended with all-inorganic mixed halide perovskite NCs is integrated to fabricate bulk-heterojunction-based high-performance photodetectors. The transportation of photogenerated carriers is enhanced by employing electrons- and holes-extracting layers. As a result, the photoresponsivity of 6.16 A W−1 and a specific detectivity of 5.96 × 1013 Jones with an ON/OFF current ratio of 105 is obtained for bulk-heterojunction photodetector ITO/ZnO/PbSe:CsPbBr1.5I1.5/P3HT/Au in the self-powered mode. Meanwhile, the device performance of the fabricated photodetector is numerically simulated by using Technology Computer-Aided Design software, and the physical mechanisms for photogenerated carriers’ transportation are discussed in detail.
AB - Self-powered broadband photodetectors exhibit excellent self-powered and wide-band photoresponse from visible to infrared region and attract enormous attention due to their promising applications in imaging, sensing, and optical communication. PbSe colloidal quantum dots (CQDs) and halide perovskites nanocrystals (NCs) are commonly used for photodetectors due to their strong absorption capability, tunable bandgap, and high aspect ratio. However, due to suffering from low charge carrier mobility and high trap density, the performance of individual PbSe CQDs and perovskites-based photodetectors is not satisfactory. Integration of PbSe CQDs with inorganic mixed-halide perovskite nanomaterials can provide an opportunity to overcome these drawbacks. In this work, a hybrid nanocomposite of PbSe CQDs blended with all-inorganic mixed halide perovskite NCs is integrated to fabricate bulk-heterojunction-based high-performance photodetectors. The transportation of photogenerated carriers is enhanced by employing electrons- and holes-extracting layers. As a result, the photoresponsivity of 6.16 A W−1 and a specific detectivity of 5.96 × 1013 Jones with an ON/OFF current ratio of 105 is obtained for bulk-heterojunction photodetector ITO/ZnO/PbSe:CsPbBr1.5I1.5/P3HT/Au in the self-powered mode. Meanwhile, the device performance of the fabricated photodetector is numerically simulated by using Technology Computer-Aided Design software, and the physical mechanisms for photogenerated carriers’ transportation are discussed in detail.
KW - PbSe colloidal quantum dots
KW - bulk-heterojunctions
KW - mixed-halide perovskite nanocrystals
KW - self-powered photodetectors
UR - http://www.scopus.com/inward/record.url?scp=85129342571&partnerID=8YFLogxK
U2 - 10.1002/adfm.202201527
DO - 10.1002/adfm.202201527
M3 - Article
AN - SCOPUS:85129342571
SN - 1616-301X
VL - 32
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 28
M1 - 2201527
ER -