BROWSE

Related Researcher

Author

Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab (ATOMS)
Research Interests
  • Optoelectronic materials synthesis/organic electronics, functionalization of carbonaceous solids, advanced materials chemistry, macromolecular chemistry

ITEM VIEW & DOWNLOAD

Replacing 2,1,3-benzothiadiazole with 2,1,3-naphthothiadiazole in PCDTBT: towards a low bandgap polymer with deep HOMO energy level

Cited 8 times inthomson ciCited 8 times inthomson ci
Title
Replacing 2,1,3-benzothiadiazole with 2,1,3-naphthothiadiazole in PCDTBT: towards a low bandgap polymer with deep HOMO energy level
Author
Kim, JonggiYun, Myoung HeeKim, Gi-HwanKim, Jin YoungYang, Changduk
Keywords
1 ,3-benzothiadiazole; 2 ,1 ,3-Benzothiadiazole; Absorption edges; Band-gap polymers; Bulk heterojunction; HOMO energy levels; Low bandgap polymers; P-type; Photovoltaic property; Polymer Solar Cells; Power conversion efficiencies; Red-shifted
Issue Date
201212
Publisher
ROYAL SOC CHEMISTRY
Citation
POLYMER CHEMISTRY, v.3, no.12, pp.3276 - 3281
Abstract
With the rising interest in using the medium bandgap polymer, poly(2,7-carbazole-alt-4,7-dithienyl-2,1,3-benzothiadiazole) (PCDTBT) with deep HOMO energy level for polymer solar cells (PSCs), we have developed an analogous polymer with a lower bandgap, namely, poly(2,7-carbazole-alt-4,7-dithienyl-2,1,3-naphthothiadiazole) (PCDTNT) by replacing 2,1,3-benzothiadiazole (BT) with 2,1,3-naphthothiadiazole (NT) in PCDTBT. Its optical, electrochemical, and photovoltaic properties are fully characterized in comparison with PCDTBT. Clearly, the lambda(max) position of PCDTNT is significantly red-shifted by similar to 30 nm, corresponding to a lower optical bandgap (1.71 eV) from the absorption edge of the thin film than that of PCDTBT (1.88 eV). A bulk-heterojunction (BHJ) PSC that incorporated PCDTNT with the low-lying HOMO energy level as a p-type material delivers a higher V-OC value of 0.81 V and a power conversion efficiency (PCE) value of 1.31%.
URI
Go to Link
DOI
http://dx.doi.org/10.1039/c2py20488f
ISSN
1759-9954
Appears in Collections:
ECHE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

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

MENU