Water-soluble CdTe quantum dots as an anode interlayer for solution-processed near infrared polymer photodetectors

Journal Article (Journal Article)

Water-soluble cadmium telluride (CdTe) quantum dots (QDs) used as an anode interlayer in solution-processed near infrared (NIR) polymer photodetectors (PDs) were demonstrated. Polymer PDs incorporated with CdTe QDs as an anode interlayer exhibited 10-fold suppressed dark current density and analogous photocurrent density relative to poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS), which resulted in enhanced detectivities over 1011 Jones in the spectral range from 350 nm to 900 nm. Moreover, with the substitution of PEDOT:PSS by CdTe QDs, the stability of unencapsulated NIR polymer PDs was extended up to 650 hours, which is more than 3 times longer than those with PEDOT:PSS as an anode interlayer. These results indicated that CdTe QDs can be utilized as a solution-processable alternative to PEDOT:PSS as an anode interlayer for high performance NIR polymer PDs. © 2013 The Royal Society of Chemistry.

Full Text

Duke Authors

Cited Authors

  • Liu, X; Zhou, J; Zheng, J; Becker, ML; Gong, X

Published Date

  • December 2, 2013

Published In

Volume / Issue

  • 5 / 24

Start / End Page

  • 12474 - 12479

Electronic International Standard Serial Number (EISSN)

  • 2040-3372

International Standard Serial Number (ISSN)

  • 2040-3364

Digital Object Identifier (DOI)

  • 10.1039/c3nr03602b

Citation Source

  • Scopus