Open Access
Open access
Nature Communications, volume 7, issue 1, publication number 11954

Integrating an electrically active colloidal quantum dot photodiode with a graphene phototransistor

Ivan Nikitskiy 1
Stijn Goossens 1
Dominik Kufer 1
Tania Lasanta 1
Gabriele Navickaite 1
Frank H L Koppens 1, 2
Gerasimos Konstantatos 1, 2
Publication typeJournal Article
Publication date2016-06-17
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor16.6
ISSN20411723, 20411723
PubMed ID:  27311710
General Chemistry
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
Abstract
The realization of low-cost photodetectors with high sensitivity, high quantum efficiency, high gain and fast photoresponse in the visible and short-wave infrared remains one of the challenges in optoelectronics. Two classes of photodetectors that have been developed are photodiodes and phototransistors, each of them with specific drawbacks. Here we merge both types into a hybrid photodetector device by integrating a colloidal quantum dot photodiode atop a graphene phototransistor. Our hybrid detector overcomes the limitations of a phototransistor in terms of speed, quantum efficiency and linear dynamic range. We report quantum efficiencies in excess of 70%, gain of 105 and linear dynamic range of 110 dB and 3 dB bandwidth of 1.5 kHz. This constitutes a demonstration of an optoelectronically active device integrated directly atop graphene and paves the way towards a generation of flexible highly performing hybrid two-dimensional (2D)/0D optoelectronics. The combination of fast photo-response and high gain plays a pivotal role in photodetector devices. Here the authors combine a colloidal quantum dot photodiode with a graphene phototransistor to overcome the speed, quantum efficiency and linear dynamic range limitations of available phototransistors.

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Nikitskiy I. et al. Integrating an electrically active colloidal quantum dot photodiode with a graphene phototransistor // Nature Communications. 2016. Vol. 7. No. 1. 11954
GOST all authors (up to 50) Copy
Nikitskiy I., Goossens S., Kufer D., Lasanta T., Navickaite G., Koppens F. H. L., Konstantatos G. Integrating an electrically active colloidal quantum dot photodiode with a graphene phototransistor // Nature Communications. 2016. Vol. 7. No. 1. 11954
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RIS Copy
TY - JOUR
DO - 10.1038/ncomms11954
UR - https://doi.org/10.1038/ncomms11954
TI - Integrating an electrically active colloidal quantum dot photodiode with a graphene phototransistor
T2 - Nature Communications
AU - Nikitskiy, Ivan
AU - Goossens, Stijn
AU - Kufer, Dominik
AU - Lasanta, Tania
AU - Navickaite, Gabriele
AU - Koppens, Frank H L
AU - Konstantatos, Gerasimos
PY - 2016
DA - 2016/06/17 00:00:00
PB - Springer Nature
IS - 1
VL - 7
PMID - 27311710
SN - 2041-1723
SN - 2041-1723
ER -
BibTex
Cite this
BibTex Copy
@article{2016_Nikitskiy,
author = {Ivan Nikitskiy and Stijn Goossens and Dominik Kufer and Tania Lasanta and Gabriele Navickaite and Frank H L Koppens and Gerasimos Konstantatos},
title = {Integrating an electrically active colloidal quantum dot photodiode with a graphene phototransistor},
journal = {Nature Communications},
year = {2016},
volume = {7},
publisher = {Springer Nature},
month = {jun},
url = {https://doi.org/10.1038/ncomms11954},
number = {1},
doi = {10.1038/ncomms11954}
}
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