Cited 0 time in webofscience Cited 1 time in scopus

Fabrication of High Performance, Narrowband Blue-Selective Polymer Photodiodes with Dialkoxynaphthalene-Based Conjugated Polymer

Title
Fabrication of High Performance, Narrowband Blue-Selective Polymer Photodiodes with Dialkoxynaphthalene-Based Conjugated Polymer
Authors
Yoon, Seong WonHa, Yeon HeeKwon, Soon KiKim, Yun HiChung, Dae Sung
DGIST Authors
Chung, Dae Sung
Issue Date
2018-02
Citation
ACS Photonics, 5(2), 636-641
Type
Article
Article Type
Article
Keywords
Butyric acidConjugated polymersEfficiencyEnergy gapHeterojunctionsII-VI semiconductorsPhotodiodesSodium compoundsSolventsThorium compoundsBased conjugated polymersColor selectivityDetectivityExternal quantum efficiencynonabsorbing acceptorPlanar heterojunction structuresSpace charge limited currents[6 ,6]-phenyl-C61-butyric acid methyl estersQuantum efficiency
ISSN
2330-4022
Abstract
Here, we synthesized a dihexyloxynaphthalene-based conjugated polymer (PNa6-Th) to realize narrowband blue-selective polymer photodiode. The optical, electrochemical, and thermal properties of the synthesized polymer were investigated. It was found that PNa6-Th exhibited a blue-selective absorption with a narrow full width at half-maximum of ∼100 nm and a wide optical band gap of ∼2.52 eV. We constructed a planar heterojunction structure with PNa6-Th and ZnO as a blue-selective electron donor and nonabsorbing acceptor, respectively; To enhance the photodiode performance, a minor amount of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) was introduced on the donor layer. By introducing the PCBM on PNa6-Th layer, external quantum efficiency was increased from 5.4% for pristine device to 37.8% for 15 wt % PCBM-doped device, while the dark current values maintained nearly constant. This external quantum efficiency boost leads to high detectivity of 2.31 × 1012 Jones at -1 V. The physics behind the improved performance were fully discussed based on percolation pathway theory and space-charge-limited current analyses. © 2017 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/6095
DOI
10.1021/acsphotonics.7b01248
Publisher
American Chemical Society
Related Researcher
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringEco Energy Device Lab1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE