非制冷红外探测器研究进展（特邀）

非制冷红外探测器由于无需制冷装置，能够工作在室温状态下，具有成本低、体积小、功耗低等特点，在红外领域得到了广泛的应用。在军事应用方面，非制冷型探测器的应用逐渐进入了之前制冷型探测器的应用范围，大量应用在一些低成本的武器系统，甚至在一些应用领域取代了原来的非制冷型探测器。在民用领域方面，更表现出了其价格和使用方便的优势，在民用车载夜视、安防监控等应用领域引起了广泛的兴趣和关注。文中介绍了Bolometer、热释电、热电堆等几种典型非制冷红外探测器的工作原理，列举了目前已实现商业化应用的主要产品在国内外的情况，着重介绍了目前应用最广泛的Bolometer器件主流产品的像元间距、阵列规格、性能及其封装发展的情况。除了已实现商业化应用的Bolometer、热释电、SOI二极管等探测器等产品，还详细介绍了一些非制冷探测新技术或新型器件:比如超表面在增强某些波段吸收方面的应用，新材料的Bolometer探测器、双材料新型非制冷器件、石墨烯、量子点、纳米线等光电探测技术的研究进展。最后文章还对今后非制冷红外探测器的发展趋势作了预测。

Research progress of uncooled infrared detectors(Invited)

Uncooled infrared detectors are widely used in the infrared field due to their low cost, small size, and low power consumption because they do not need the cooling device and can work at room temperature. In military application field, the uncooled detector has gradually entered the application domain of previous refrigerated detector, and has been widely used in some low-cost weapon systems, even replaced the original uncooled detectors in some application fields. In the civil field, it has shown its advantages in price and ease of use, and has aroused widespread interest and attention in civil in-vehicle night vision, security monitoring and other application field. The working theory of several typical uncooled infrared detectors such as Bolometer, pyroelectric, thermopile, etc. were introduced, and the status of the main products that have been commercialized at home and abroad was enumerated, the development of pixel pitch, array specifications, performance and packaging of mainstream bolometer devices was focused, which were currently the most widely used. In addition to the bolometer, pyroelectric, SOI diode and other products that had been commercialized, some new uncooled detection technologies or new detectors were introduced in detail: such as the application of metasurfaces in enhancing absorption in certain wavebands, the research progress of new materials bolometer, new bi-material uncooled devices, graphene, quantum dots, nanowires and other photoelectric detection technologies. Finally, the future development trend of uncooled infrared detectors were predicted in the end of the review.