James Bullock

Visible to Short-Wave Infrared Photodetectors Based on ZrGeTe4 van der Waals Materials.

Wei Yan, Brett C Johnson, Sivacarendran Balendhran, Jasper Cadusch, Di Yan, Jesús Ibarra Michel, Shifan Wang, Tian Zheng, Kenneth Crozier, James Bullock

Journal article  |  2021  |  ACS Appl Mater Interfaces

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

Copper Tetracyanoquinodimethane (CuTCNQ): A Metal-Organic Semiconductor for Room-Temperature Visible to Long-Wave Infrared Photodetection

Sivacarendran Balendhran, Zakir Hussain, Vivek R Shrestha, Jasper Cadusch, Ming Ye, Nima Sefidmooye Azar, Hyungjin Kim, Rajesh Ramanathan, James Bullock, Ali Javey, Vipul Bansal, Kenneth B Crozier

Journal article  |  2021  |  ACS APPLIED MATERIALS & INTERFACES

Mid-wave and long-wave infrared (MWIR and LWIR) detection play vital roles in applications that include health care, remote sensin..

Aluminium electrode induced surface passivation deterioration for dopant free passivated contacts

Wensheng Liang, Parvathala Narangari, Jingnan Tong, James Bullock, Jesus Ibarra Michel, Hang Cheong Sio, Teng Kho, Stephane Armand, Keith McIntosh, Kean Chern Fong

Conference Proceedings  |  2021  |  2021 IEEE 48th Photovoltaic Specialists Conference (PVSC)

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

Nima Sefidmooye Azar, James Bullock, Vivek Raj Shrestha, Sivacarendran Balendhran, Wei Yan, Hyungjin Kim, Ali Javey, Kenneth B Crozier

Journal article  |  2021  |  ACS NANO

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

Nima Sefidmooye Azar, James Bullock, Sivacarendran Balendhran, Hyungjin Kim, Ali Javey, Kenneth B Crozier

Journal article  |  2021  |  ACS PHOTONICS

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

Polysilicon passivated junctions: The next technology for silicon solar cells?

Di Yan, Andres Cuevas, Jesus Ibarra Michel, Chun Zhang, Yimao Wan, Xinyu Zhang, James Bullock

Journal article  |  2021  |  JOULE

Despite the maturity of crystalline silicon photovoltaics (c-Si PV), the last 6 years have seen a string of efficiency improvement..

Polarization-Converting Plasmonic Nanoantennas for Light Absorption Enhancement in Anisotropic 2D Black Phosphorus

Nima Sefidmooye Azar, James Bullock, Sivacarendran Balendhran, Hyungjin Kim, Ali Javey, Kenneth B Crozier

Conference Proceedings  |  2021  |  Conference on Lasers and Electro-Optics

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

Journal article  |  2020  |  ACS Nano

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

Visible to Long-Wave Infrared Photodetectors based on Copper Tetracyanoquinodimethane (CuTCNQ) Crystals

S Balendhran, Z Hussain, VR Shrestha, J Cadusch, M Ye, H Kim, R Ramanathan, J Bullock, A Javey, V Bansal, KB Crozier

Conference Proceedings  |  2020  |  2020 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2020 - Proceedings

We demonstrate room-temperature photodetectors at wavelengths from visible (450 nm, 532 nm) to near- (850 nm), short-wave (1550 nm..

Mid- to long-wave infrared computational spectroscopy with a graphene metasurface modulator.

Vivek Raj Shrestha, Benjamin Craig, Jiajun Meng, James Bullock, Ali Javey, Kenneth B Crozier

Journal article  |  2020  |  Scientific Reports

In recent years there has been much interest concerning the development of modulators in the mid- to long-wave infrared, based on ..