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Two dimensional transition metal di-chalcogenides (TMDCs) are promising candidates for ultra-low intensity photodetection. However, the performance of these photodetectors is usually limited by ambience induced rapid performance degradation…

Mesoscale and Nanoscale Physics · Physics 2018-08-30 Krishna Murali , Kausik Majumdar

Semiconducting 2D materials, such as molybdenum disulfide (MoS2) and other members of the transition metal dichalcogenide family, have emerged as promising materials for applications in high performance nanoelectronics that exhibit…

Applied Physics · Physics 2019-05-24 David Maeso , Andres Castellanos-Gomez , Nicolas Agraït , Gabino Rubio-Bollinger

Recent approaches to develop infrared photodetectors characterized by high sensitivities, broadband spectral coverage, easy integration with silicon electronics and low cost have been based on hybrid structures of transition metal…

Applied Physics · Physics 2020-03-27 Onur Özdemir , Iñigo Ramiro , Shuchi Gupta , Gerasimos Konstantatos

Photodetectors based on two dimensional materials have attracted growing interest. However, the sensitivity is still unsatisfactory even under high gate voltage. Here we demonstrate a MoS2 photodetector with a poly(vinylidene…

Topological insulators have shown great potential for future optoelectronic technology due to their extraordinary optical and electrical properties. Photodetectors, as one of the most widely used optoelectronic devices, are crucial for…

Conventional metals, in general, do not exhibit strong photoluminescence. 2H-TaSe$_2$ is a layered transition metal dichalcogenide that possesses metallic property with charge density wave characteristics. Here we show that 2H-TaSe$_2$…

Mesoscale and Nanoscale Physics · Physics 2019-08-20 Mehak Mahajan , Sangeeth Kallatt , Medha Dandu , Naresh Sharma , Shilpi Gupta , Kausik Majumdar

Photodetectors based on two-dimensional (2D) atomically thin semiconductors suffer from low light absorption, limiting their potential for practical applications. In this work, we demonstrate a high-performance MoS2 phototransistors by…

Mesoscale and Nanoscale Physics · Physics 2024-08-09 Seyed Saleh Mousavi Khaleghi , Jianyong Wei , Yumeng Liu , Zhengfang Fan , Kai Li , Kenneth B. Crozier , Yaping Dan

Two-dimensional (2D) transition metal dichalcogenides (TMDs) based photodetectors have shown great potential for the next generation optoelectronics. However, most of the reported MoS2 photodetectors function under the photogating effect…

Owing to its atomically thin thickness, layer-dependent tunable band gap, flexibility, and CMOS compatibility, MoS$_2$ is a promising candidate for photodetection. However, mono-layer MoS2-based photodetectors typically show poor…

Atomically thin transition metal dichalcogenides (TMDs) are ideal candidates for ultrathin optoelectronics that is flexible and semitransparent. Photodetectors based on TMDs show remarkable performance, with responsivity and detectivity…

Mesoscale and Nanoscale Physics · Physics 2019-04-23 Peize Han , Eli Adler , Yijing Liu , Luke St. Marie , Abdel El Fatimy , Scott Melis , Edward Van Keuren , Paola Barbara

Two dimensional material/semiconductor heterostructures offer alternative platforms for optoelectronic devices other than conventional Schottky and p-n junction devices. Herein, we use MoS2/GaAs heterojunction as a self-driven photodetector…

Instrumentation and Detectors · Physics 2021-03-02 Zhijuan Xu , Shisheng Lin , Xiaoqiang Li , Shengjiao Zhang , Zhiqian Wu , Wenli Xu , Yanghua Lu , Sen Xu

Atomically-thin two-dimensional (2D) layered transition metal dichalcogenides (TMDs) have been extensively studied in recent years because of their appealing electrical and optical properties. Here, we report on the fabrication of ReS2…

Materials Science · Physics 2019-08-17 Enze Zhang , Yibo Jin , Xiang Yuan , Weiyi Wang , Cheng Zhang , Lei Tang , Shanshan Liu , Peng Zhou , Weida Hu , Faxian Xiu

Few-layer molybdenum disulfide (FL-MoS$_2$) films have been integrated into amorphous silicon (a-Si:H) pin photodetectors. To achieve this, vertical a-Si:H photodiodes were grown by plasma-enhanced chemical vapor deposition (PE-CVD) on top…

Two-dimensional materials such as graphene and transition metal dichalcogenides (TMDs) are ideal candidates to create ultra-thin electronics suitable for flexible substrates. Although optoelectronic devices based on TMDs have demonstrated…

Mesoscale and Nanoscale Physics · Physics 2018-03-15 Peize Han , Luke St. Marie , Qing X. Wang , Nicholas Quirk , Abdel El Fatimy , Masahiro Ishigami , Paola Barbara

Two-dimensional molybdenum disulfide (MoS$_2$) featuring atomically thin thickness and unique electronic structure with favorable bandgap has been widely recognized as an attractive new material for the development of the next generation of…

Scalable fabrication of high quality photodetectors derived from synthetically grown monolayer transition metal dichalcogenides is highly desired and important for wide range of nanophotonics applications. We present here scalable…

Applied Physics · Physics 2017-10-03 Alexander E. Yore , K. K. H. Smithe , Sauraj Jha , Kyle Ray , Eric Pop , A. K. M. Newaz

Integrating two-dimensional (2D) crystals into optical fibers can grant them optoelectronic properties and extend their range of applications. However, our ability to produce complicated structures is limited by the challenges of chemical…

Applied Physics · Physics 2018-07-03 Yi-feng Xiong , Jin-hui Chen , Fei Xu

Future generation technologies demand high efficiency photodetectors to enable sensing and switching devices for ultrafast communication and machine vision. This require direct-band gap materials with high photosensitivity, high detectivity…

Instrumentation and Detectors · Physics 2023-03-28 Rakesh K. Prasad , Koushik Ghosh , P. K. Giri , Dai-Sik Kim , Dilip K. Singh

Two-dimensional (2D) material photodetectors have gained great attention as potential elements for optoelectronic applications. However, the linearity of the photoresponse is often compromised by the carrier interaction, even in 2D…

Mesoscale and Nanoscale Physics · Physics 2023-12-12 Jinpeng Xu , Xiaoguang Luo , Xi Lin , Xi Zhang , Fan Liu , Yuting Yan , Siqi Hu , Mingwen Zhang , Nannan Han , Xuetao Gan , Yingchun Cheng , Wei Huang

Atomically thin two-dimensional (2D) transition metal dichalcogenides (TMDs), such as MoS$_2$, are promising candidates for nanoscale photonics because of strong-light matter interactions. However, Fermi level pinning due to metal-induced…

Mesoscale and Nanoscale Physics · Physics 2023-03-07 Hon-Loen Sinn , Aravindh Kumar , Eric Pop , Akm Newaz
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