Final LDRD report : infrared detection and power generation using self-assembled quantum dots.

Cederberg, Jeffrey George ; Ellis, Robert ; Shaner, Eric Arthur

关键词: INFRARED RADIATION;    DESIGN;    PERFORMANCE;    PHOTODETECTORS;    POWER GENERATION;    QUANTUM DOTS;    RADIATION DETECTION Infrared detectors.;    Radiation-Detection-Instruments.;    Quantum dots.;   

DOI  :  10.2172/929520
RP-ID  :  SAND2008-1333
PID  :  OSTI ID: 929520
Others  :  TRN: US200822%%876

学科分类：工程和技术（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Alternative solutions are desired for mid-wavelength and long-wavelength infrared radiation detection and imaging arrays. We have investigated quantum dot infrared photodetectors (QDIPs) as a possible solution for long-wavelength infrared (8 to 12 {mu}m) radiation sensing. This document provides a summary for work done under the LDRD 'Infrared Detection and Power Generation Using Self-Assembled Quantum Dots'. Under this LDRD, we have developed QDIP sensors and made efforts to improve these devices. While the sensors fabricated show good responsivity at 80 K, their detectivity is limited by high noise current. Following efforts concentrated on how to reduce or eliminate this problem, but with no clear path was identified to the desired performance improvements.