Colloidal Quantum-Dot Heterojunction Imagers for Room-Temperature Thermal Imaging.

• Tác giả: Qun Hao, Yanfei Liu, Ge Mu, Yimei Tan, Xin Tang, Kangkang Weng, Xiaolong Zheng
• Ngôn ngữ: eng
• Ký hiệu phân loại: 572.886 +Transfer RNA
• Thông tin xuất bản: Germany : Advanced materials (Deerfield Beach, Fla.) , 2025
• Bộ sưu tập: NCBI
• ID: 690305

Tóm tắt

Room-temperature operation or high-operation temperature (HOT) is essential for mid-wave infrared (MWIR) optoelectronics devices providing low-cost and compact systems for numerous applications. Colloidal quantum dots (CQDs) have emerged as a rising candidate to enable photodetectors to operate at HOT or room temperature and develop the next-generation infrared focal plane array (FPA) imagers. Here, band-engineered heterojunctions are demonstrated to suppress dark current with well-passivated mercury telluride (HgTe) CQDs enabling room-temperature MWIR imaging by single-pixel scanning and 640 × 512 FPA sensitive thermal imaging above 250 K. As a result, the room-temperature detectivity reaches as high as 1.26 × 10