Long Wave Infrared (LWIR) Photodetectors Based on Nano-Optics and Two Dimensional Materials

Visible to Short-Wave Infrared Photodetectors Based on ZrGeTe4van der Waals Materials

W Yan, BC Johnson, S Balendhran, J Cadusch, D Yan, JI Michel, S Wang, T Zheng, K Crozier, J Bullock

2021-09-29

The self-terminated, layered structure of van der Waals materials introduces fundamental advantages for infrared (IR) optoelectron..

Graphene-based mid-infrared photodetectors using metamaterials and related concepts

M Ye, J Zha, C Tan, KB Crozier

2021-09-01

Graphene, a semi-metal with a gapless band structure, has been used in mid-infrared (MIR) photodetectors (PDs) for some time. Howe..

Actively variable-spectrum optoelectronics with black phosphorus

H Kim, SZ Uddin, DH Lien, M Yeh, NS Azar, S Balendhran, T Kim, N Gupta, Y Rho, CP Grigoropoulos, KB Crozier, A Javey

2021-08-12

Room-temperature optoelectronic devices that operate at short-wavelength and mid-wavelength infrared ranges (one to eight micromet..

Long-Wave Infrared Photodetectors Based on 2D Platinum Diselenide atop Optical Cavity Substrates

N Sefidmooye Azar, J Bullock, VR Shrestha, S Balendhran, W Yan, H Kim, A Javey, KB Crozier

2021-04-27

Long-wave infrared (LWIR) photodetection is of high technological importance, having a wide range of applications that include the..

Light-Matter Interaction Enhancement in Anisotropic 2D Black Phosphorus via Polarization-Tailoring Nano-Optics

NS Azar, J Bullock, S Balendhran, H Kim, A Javey, KB Crozier

2021-04-21

Black phosphorus (bP), a two-dimensional (2D) layered material, has shown great potential for infrared (IR) optoelectronics owing ..

Spectrally Selective Mid-Wave Infrared Detection Using Fabry-Pérot Cavity Enhanced Black Phosphorus 2D Photodiodes.

Wei Yan, Vivek Raj Shresha, Quentin Jeangros, Nima Sefidmooye Azar, Sivacarendran Balendhran, Christophe Ballif, Kenneth Crozier, James Bullock

2020-10-27

Thin two-dimensional (2D) material absorbers have the potential to reduce volume-dependent thermal noise in infrared detectors. Ho..

Evaporated SexTe1-x Thin Films with Tunable Bandgaps for Short-Wave Infrared Photodetectors

C Tan, M Amani, C Zhao, M Hettick, X Song, DH Lien, H Li, M Yeh, VR Shrestha, KB Crozier, MC Scott, A Javey

2020-09-01

Semiconducting absorbers in high-performance short-wave infrared (SWIR) photodetectors and imaging sensor arrays are dominated by ..

Visible to long-wave infrared chip-scale spectrometers based on photodetectors with tailored responsivities and multispectral filters

Jasper J Cadusch, Jiajun Meng, Benjamin J Craig, Vivek Raj Shrestha, Kenneth B Crozier

2020-09-01

Chip-scale microspectrometers, operational across the visible to long-wave infrared spectral region will enable many remote sensin..

Metasurface with metallic nanoantennas and graphene nanoslits for sensing of protein monolayers and sub-monolayers

M Ye, KB Crozier

2020-06-08

Biomolecule sensing plays an important role in both fundamental biological studies and medical diagnostic applications. Infrared (..

Long-wave infrared magnetic mirror based on Mie resonators on conductive substrate

Ming Ye, Shi-Qiang Li, Yang Gao, Kenneth B Crozier

2020-01-20

Metal films are often used in optoelectronic devices as mirrors and/or electrical contacts. In many such devices, however, the π-p..

Mid- to long-wave infrared computational spectroscopy using a subwavelength coaxial aperture array

Benjamin J Craig, Jiajun Meng, Vivek Raj Shrestha, Jasper J Cadusch, Kenneth B Crozier

2019-09-19

Miniaturized spectrometers are advantageous for many applications and can be achieved by what we term the filter-array detector-ar..

Optical and electrical properties of two-dimensional palladium diselenide

G Zhang, M Amani, A Chaturvedi, C Tan, J Bullock, X Song, H Kim, DH Lien, MC Scott, H Zhang, A Javey

2019-06-24

© 2019 Author(s). Two-dimensional (2D) noble-metal dichalcogenides exhibit exceptionally strong thickness-dependent bandgaps, whic..

Bull's eye grating integrated with optical nanoantennas for plasmonic enhancement of graphene long-wave infrared photodetectors

Nima Sefidmooye Azar, Vivek Raj Shrestha, Kenneth B Crozier

2019-03-04

Two-dimensional (2D) materials have exhibited potential for infrared detection at room temperature, yet their low light absorption..

Polarization-resolved black phosphorus/molybdenum disulfide mid-wave infrared photodiodes with high detectivity at room temperature

James Bullock, Matin Amani, Joy Cho, Yu-Ze Chen, Geun Ho Ahn, Valerio Adinolfi, Vivek Raj Shrestha, Yang Gao, Kenneth B Crozier, Yu-Lun Chueh, Ali Javey

2018-10-01

Infrared photodetectors are currently subject to a rapidly expanding application space, with an increasing demand for compact, sen..

Experimental demonstration of infrared spectral reconstruction using plasmonic metasurfaces

B Craig, VR Shrestha, J Meng, JJ Cadusch, KB Crozier

2018-09-15

We computationally reconstruct short- to long-wave infrared spectra using an array of plasmonic metasurface filters. We illuminate..

Mid-infrared Magnetic Mirror Based on a Hybrid Metal/Dielectric Metasurface

M Ye, S Li, Y Gao, VR Shrestha, KB Crozier

2018-08-06

We propose a hybrid metal/dielectric metasurface that functions as a mid-infrared magnetic mirror. It consists amorphous silicon c..

Solution-Synthesized High-Mobility Tellurium Nanoflakes for Short-Wave Infrared Photodetectors

M Amani, C Tan, G Zhang, C Zhao, J Bullock, X Song, H Kim, VR Shrestha, Y Gao, KB Crozier, M Scott, A Javey

2018-07-24

Two-dimensional (2D) materials, particularly black phosphorus (bP), have demonstrated themselves to be excellent candidates for hi..

Electrical tuning of reflectance of graphene metasurface for unpolarized long wavelength infrared light

VR Shrestha, Y Gao, M Amani, J Bullock, A Javey, KB Crozier

2018-01-01

We demonstrate a graphene-metal metasurface for unpolarized long wavelength infrared light with electrically-tunable reflectance. ..

Experimental Demonstration of Mid-Infrared Computational Spectroscopy with a Plasmonic Filter Array

Benjamin Craig, Vivek Raj Shrestha, Jiajun Meng, Kenneth B Crozier

2018-01-01

We demonstrate mid-infrared plasmonic filters. We experimentally determine the spectrum of a mid-infrared light source using an al..

Mid-Wave Infrared Photoconductors Based on Black Phosphorus-Arsenic Alloys

M Amani, E Regan, J Bullock, GH Ahn, A Javey

2017-11-28

Black phosphorus (b-P) and more recently black phosphorus-arsenic alloys (b-PAs) are candidate 2D materials for the detection of m..

Plasmonic filter arrays for infrared spectral reconstruction

B Craig, VR Shrestha, J Meng, KB Crozier

2017-01-01

We experimentally demonstrate an array of plasmonic infrared transmission filters. We show, by simulations that include noise, rec..