Controlling the morphology of the active layer by using additives and its effect on bulk hetero-junction solar cell performance

Viet Hau Thanh Pham, Nguyen Tam Nguyen Truong, Thanh Kieu Trinh, Sang Hoon Lee, Chinho Park

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

-Improvement of the surface roughness and power conversion efficiency (PCE) of bulk hetero-junction (BHJ) solar cells was made by the addition of organic additives for the cells based on a low energy-gap polymer, poly [2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b'] dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT), as an electron donor and [6,6]-phenyl C61 butyric acid methyl ester (PC61BM) as the electron acceptor. The PCPDTBT: PC61BM active layers were prepared by spin-coating process from four different organic solvents: pure chlorobenzene, chlorobenzene with 2.5 vol% 1,2-ethanedithiol (EDT) additive, chlorobenzene with 2.5 vol% 1,8-octanedithiol (ODT) additive, and chlorobenzene with a combination of 2.5 vol% EDT and 2.5 vol% ODT additives. The smoothest surface of the active layer, which was observed by AFM, was obtained in the case of PCPDTBT:PC61BM prepared with a combination of EDT and ODT additives in chlorobenzene, and a maximum PCE of 3.5% was achieved.

Original languageEnglish
Pages (from-to)678-682
Number of pages5
JournalKorean Journal of Chemical Engineering
Volume33
Issue number2
DOIs
Publication statusPublished - 2016 Feb 1
Externally publishedYes

Fingerprint

Butyric acid
Solar cells
Esters
Conversion efficiency
Butyric Acid
Electrons
Spin coating
Organic solvents
Energy gap
Surface roughness
Polymers
chlorobenzene
poly(2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta(2,1-b-3,4-b0)dithiophene))-alt-4,7-(2,1,3-benzothiadiazole)
1,2-ethanedithiol
1,8-octanedithiol

Keywords

  • 1,2-Ethanedithiol
  • 1,8-Octanedithiol
  • Additives
  • Bulk Hetero-junction
  • Organic Solar Cells

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Controlling the morphology of the active layer by using additives and its effect on bulk hetero-junction solar cell performance. / Pham, Viet Hau Thanh; Truong, Nguyen Tam Nguyen; Trinh, Thanh Kieu; Lee, Sang Hoon; Park, Chinho.

In: Korean Journal of Chemical Engineering, Vol. 33, No. 2, 01.02.2016, p. 678-682.

Research output: Contribution to journalArticle

Pham, Viet Hau Thanh ; Truong, Nguyen Tam Nguyen ; Trinh, Thanh Kieu ; Lee, Sang Hoon ; Park, Chinho. / Controlling the morphology of the active layer by using additives and its effect on bulk hetero-junction solar cell performance. In: Korean Journal of Chemical Engineering. 2016 ; Vol. 33, No. 2. pp. 678-682.
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