Resonant cavity-enhanced colloidal quantum-dot dual-band infrared photodetectors

Yuning Luo; Shuo Zhang; Xin Tang; Menglu Chen

doi:10.1039/d2tc01122k

Resonant cavity-enhanced colloidal quantum-dot dual-band infrared photodetectors

Yuning Luo, Shuo Zhang, Xin Tang^*, Menglu Chen^*

^*Corresponding author for this work

School of Optics and Photonics

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Infrared multispectral detection is explored extensively due to its wide applications in military reconnaissance, auto-driving and weather forecasting. As an alternative to epitaxial semiconductors, the wide spectral tunability and optical versatility of colloidal quantum dots (CQDs) have inspired various high-performance optoelectronic devices. Here, we demonstrate an integration of the CQD dual-band infrared photodetector and a Fabry-Perot resonance cavity, which provides a bias-switchable spectral response in the short-wave infrared (SWIR) and mid-wave infrared (MWIR) range. At the same time, the performance of the detector can be elevated by the improved optical collection efficiency and spectral selectivity due to the resonant cavity. The photodetector has a responsivity of 1.1 A W⁻¹ and 1.6 A W⁻¹ in SWIR and MWIR, respectively. The detector performance is illustrated by dual-band infrared imaging and spectral absorption measurement.

Original language	English
Pages (from-to)	8218-8225
Number of pages	8
Journal	Journal of Materials Chemistry C
Volume	10
Issue number	21
DOIs	https://doi.org/10.1039/d2tc01122k
Publication status	Published - 30 Apr 2022

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title = "Resonant cavity-enhanced colloidal quantum-dot dual-band infrared photodetectors",

abstract = "Infrared multispectral detection is explored extensively due to its wide applications in military reconnaissance, auto-driving and weather forecasting. As an alternative to epitaxial semiconductors, the wide spectral tunability and optical versatility of colloidal quantum dots (CQDs) have inspired various high-performance optoelectronic devices. Here, we demonstrate an integration of the CQD dual-band infrared photodetector and a Fabry-Perot resonance cavity, which provides a bias-switchable spectral response in the short-wave infrared (SWIR) and mid-wave infrared (MWIR) range. At the same time, the performance of the detector can be elevated by the improved optical collection efficiency and spectral selectivity due to the resonant cavity. The photodetector has a responsivity of 1.1 A W−1 and 1.6 A W−1 in SWIR and MWIR, respectively. The detector performance is illustrated by dual-band infrared imaging and spectral absorption measurement.",

author = "Yuning Luo and Shuo Zhang and Xin Tang and Menglu Chen",

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AU - Luo, Yuning

AU - Zhang, Shuo

AU - Tang, Xin

AU - Chen, Menglu

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AB - Infrared multispectral detection is explored extensively due to its wide applications in military reconnaissance, auto-driving and weather forecasting. As an alternative to epitaxial semiconductors, the wide spectral tunability and optical versatility of colloidal quantum dots (CQDs) have inspired various high-performance optoelectronic devices. Here, we demonstrate an integration of the CQD dual-band infrared photodetector and a Fabry-Perot resonance cavity, which provides a bias-switchable spectral response in the short-wave infrared (SWIR) and mid-wave infrared (MWIR) range. At the same time, the performance of the detector can be elevated by the improved optical collection efficiency and spectral selectivity due to the resonant cavity. The photodetector has a responsivity of 1.1 A W−1 and 1.6 A W−1 in SWIR and MWIR, respectively. The detector performance is illustrated by dual-band infrared imaging and spectral absorption measurement.

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Resonant cavity-enhanced colloidal quantum-dot dual-band infrared photodetectors

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