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 language | English |
|---|---|
| Pages (from-to) | 678-682 |
| Number of pages | 5 |
| Journal | Korean Journal of Chemical Engineering |
| Volume | 33 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2016 Feb 1 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Controlling the morphology of the active layer by using additives and its effect on bulk hetero-junction solar cell performance
AU - Pham, Viet Hau Thanh
AU - Truong, Nguyen Tam Nguyen
AU - Trinh, Thanh Kieu
AU - Lee, Sang Hoon
AU - Park, Chinho
PY - 2016/2/1
Y1 - 2016/2/1
N2 - -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.
AB - -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.
KW - 1,2-Ethanedithiol
KW - 1,8-Octanedithiol
KW - Additives
KW - Bulk Hetero-junction
KW - Organic Solar Cells
UR - http://www.scopus.com/inward/record.url?scp=84956877703&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84956877703&partnerID=8YFLogxK
U2 - 10.1007/s11814-015-0162-3
DO - 10.1007/s11814-015-0162-3
M3 - Article
AN - SCOPUS:84956877703
VL - 33
SP - 678
EP - 682
JO - Korean Journal of Chemical Engineering
JF - Korean Journal of Chemical Engineering
SN - 0256-1115
IS - 2
ER -