ACS Photonics, volume 3, issue 7, pages 1324-1330
Interface Engineering in Hybrid Quantum Dot–2D Phototransistors
1
Publication type: Journal Article
Publication date: 2016-06-10
Electronic, Optical and Magnetic Materials
Biotechnology
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering
Abstract
The hybridization of two-dimensional transition metal dichalcogenides (TMDCs) with colloidal quantum dots (QDs) has been demonstrated to be an ideal platform for low dark-current and highly sensitive photodetection due to a carrier recirculation mechanism producing very high gain. However, TMDCs react sensitively to surface modifications, and the sensitizing quantum dots introduce uncontrolled doping, which prevent these hybrids from reaching large on/off ratios, present in pristine 2D transistors. In this work, we report on a new hybrid device architecture with a semiconducting TiO2 buffer layer at the interface of molybdenum disulfide (MoS2) and lead sulfide (PbS) QDs. The buffer layer encapsulates the MoS2 transistor and preserves the gate modulation by suppressing the high density of localized sub-band-gap states that pin the Fermi level. The maintained gate control over carrier density in the conduction channel allows for low noise operation similar to pristine MoS2 devices. We report on effective ch...
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Kufer D. et al. Interface Engineering in Hybrid Quantum Dot–2D Phototransistors // ACS Photonics. 2016. Vol. 3. No. 7. pp. 1324-1330.
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Kufer D., Lasanta T., Bernechea M., Koppens F., Konstantatos G. Interface Engineering in Hybrid Quantum Dot–2D Phototransistors // ACS Photonics. 2016. Vol. 3. No. 7. pp. 1324-1330.
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TY - JOUR
DO - 10.1021/acsphotonics.6b00299
UR - https://doi.org/10.1021/acsphotonics.6b00299
TI - Interface Engineering in Hybrid Quantum Dot–2D Phototransistors
T2 - ACS Photonics
AU - Kufer, Dominik
AU - Lasanta, Tania
AU - Bernechea, M.
AU - Koppens, Frank
AU - Konstantatos, Gerasimos
PY - 2016
DA - 2016/06/10
PB - American Chemical Society (ACS)
SP - 1324-1330
IS - 7
VL - 3
SN - 2330-4022
ER -
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@article{2016_Kufer,
author = {Dominik Kufer and Tania Lasanta and M. Bernechea and Frank Koppens and Gerasimos Konstantatos},
title = {Interface Engineering in Hybrid Quantum Dot–2D Phototransistors},
journal = {ACS Photonics},
year = {2016},
volume = {3},
publisher = {American Chemical Society (ACS)},
month = {jun},
url = {https://doi.org/10.1021/acsphotonics.6b00299},
number = {7},
pages = {1324--1330},
doi = {10.1021/acsphotonics.6b00299}
}
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MLA
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Kufer, Dominik, et al. “Interface Engineering in Hybrid Quantum Dot–2D Phototransistors.” ACS Photonics, vol. 3, no. 7, Jun. 2016, pp. 1324-1330. https://doi.org/10.1021/acsphotonics.6b00299.