Format

Send to

Choose Destination
See comment in PubMed Commons below
Nanoscale. 2013 Nov 7;5(21):10481-6. doi: 10.1039/c3nr02438e. Epub 2013 Sep 16.

Real-time and on-chip surface temperature sensing of GaN LED chips using PbSe quantum dots.

Author information

1
State Key Laboratory on Integrated Optoelectronics, and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. yuzhang@jlu.edu.cn wyu6000@gmail.com.

Abstract

PbSe quantum dots (QDs) were employed as real-time and on-chip temperature sensors to monitor the surface temperature of GaN LED chips. The temperature-dependent photoluminescence spectra were achieved and confirmed to be a good method for surface temperature sensing in a micro- to nano-region. The nanosized QD sensors did not influence the LED emission spectrum due to their infrared emission and little absorption. The surface temperature of GaN LED chips was analyzed at different working times and voltages. The temperature sensitivity characterized by the photoluminescence peak position of PbSe QDs was found to be 0.15 nm °C(-1) in a range of 30-120 °C and the precision was determined to be ± 3 °C. The QD surface temperature sensors were confirmed to have good reversibility and repeatability.

PMID:
24056578
DOI:
10.1039/c3nr02438e
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Royal Society of Chemistry
    Loading ...
    Support Center