Rakina Islam, Mohammad M Al Mahfuz, Rodrigo Castillo-Garza, Dong-Kyun Ko
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引用次数: 0
Abstract
Uncooled mid-wave infrared (MWIR) image sensors, which are compact, lightweight, and energy-efficient, are expected to take a dominant position in the future infrared market. As an alternative to traditional epitaxially-grown infrared semiconductors used in high-performance cryo-cooled MWIR imagers, the concept of hybrid sensor materials is gaining attention. Specifically, hybrid structures combining two-dimensional (2D) materials, known for their superior carrier transport properties, with colloidal quantum dots (QDs), which offer excellent optical properties, have shown record-high room-temperature infrared responsivities with spectral responses extending to short-wave infrared. The most significant potential of this new hybrid material technology lies in the underexplored MWIR spectral region. Herein, we discuss the design rules for realizing a MWIR hybrid 2D/QD sensor material and demonstrate its room temperature optical and electrical performance using proof-of-concept devices operating in the MWIR spectral region without gate biasing.
期刊介绍：
The journal aims to publish papers at the forefront of nanoscale science and technology and especially those of an interdisciplinary nature. Here, nanotechnology is taken to include the ability to individually address, control, and modify structures, materials and devices with nanometre precision, and the synthesis of such structures into systems of micro- and macroscopic dimensions such as MEMS based devices. It encompasses the understanding of the fundamental physics, chemistry, biology and technology of nanometre-scale objects and how such objects can be used in the areas of computation, sensors, nanostructured materials and nano-biotechnology.
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