响应度
光致发光
光电导性
量子点
材料科学
光电子学
光电探测器
电子
量子产额
兴奋剂
吸收(声学)
凝聚态物理
物理
光学
荧光
复合材料
量子力学
作者
Zhiyou Deng,Kwang Seob Jeong,Philippe Guyot‐Sionnest
出处
期刊:ACS Nano
[American Chemical Society]
日期:2014-10-24
卷期号:8 (11): 11707-11714
被引量:191
摘要
Photoconductivity is demonstrated with monodispersed HgSe colloidal quantum dots that are illuminated with radiation resonant with 1S(e)-1P(e) intraband electronic absorption, between 3 and 5 μm. A doping of two electrons per dot gives the lowest dark current, and a detectivity of 8.5 × 10(8) Jones is obtained at 80 K. Photoluminescence of the intraband transition is also observed. The detector properties are discussed in terms of the measured photoluminescence quantum yield, the electron mobility in the 1P(e) state, and the responsivity. The intraband photoresponse allows to fully harness the quantum confined states in colloidal nanostructures, extending the prior limited use of interband transition.
科研通智能强力驱动
Strongly Powered by AbleSci AI