@article{4fa03f03760c477cab5a88d499fd67af,
title = "Bandlike Transport in FaPbBr3Quantum Dot Phototransistor with High Hole Mobility and Ultrahigh Photodetectivity",
abstract = "Halide perovskites have been widely explored for numerous optoelectronic applications among which phototransistors have appeared as one of the most promising light signal detectors. However, it is still a great challenge to endow halide perovskites with both mobility and high photosensitivity because of their high sensitivity to moisture in ambient atmosphere. Here, we explore an FAPbBr3perovskite quantum dot (QD) phototransistor with bandlike charge transport and measure a dark hole mobility of 14.2 cm2V-1s-1at ambient atmosphere. Attaining both high mobility and good optical figures of merit, a detectivity of ∼1016Jones is achieved, which is a record for halide perovskite nanocrystals. Simple A-site salt (FABr) treatments offer a mechanism for connecting between perovskite QDs for better charge transfer in high-quality devices. All of these important properties are superior to most advanced inorganic semiconductor phototransistors, indicating a promising future in optoelectronic applications.",
keywords = "bandlike transport, halide perovskite, mobility, photodetector, quantum dots, thin film transistor",
author = "Rodrigo Ferreira and Monirul Shaikh and Jakka, {Suresh Kumar} and Jonas Deuermeier and Pedro Barquinha and Saurabh Ghosh and Elvira Fortunato and Rodrigo Martins and Santanu Jana",
note = "Funding Information: info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FCTM%2F50025%2F2013/PT# info:eu-repo/grantAgreement/EC/H2020/787410/EU# info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50025%2F2020/PT# info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50025%2F2020/PT# info:eu-repo/grantAgreement/EC/H2020/952169/EU# info:eu-repo/grantAgreement/EC/H2020/101008701/EU# This work is funded by FEDER funds through the COMPETE 2020 Program and National Funds through Portuguese Foundation for Science and Technology (FCT) under Project POCI-01-0145-FEDER-007688, and project i3N. The authors also acknowledge FCT in the scope of the framework contract foreseen in the numbers 4, 5, and 6 of the article 23, of the Decree-Law 57/2016, of August 29, changed by Law 57/2017, of July 19. Publisher Copyright: {\textcopyright} 2022 American Chemical Society. All rights reserved.",
year = "2022",
month = nov,
day = "23",
doi = "10.1021/acs.nanolett.2c03317",
language = "English",
volume = "22",
pages = "9020--9026",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "ACS - American Chemical Society",
number = "22",
}