Abstract
Two planar type photovoltaic polymers based on naphthobisthiadiazole, poly(2,5-bis(2-hexyldecyloxy)phenylene-alt-(5,10-dithiophen-2-yl)naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole) (h-PPDTNTz) and poly(2,5-bis(2-decyltetradecyloxy)phenylene-alt-(5,10-dithiophen-2-yl)naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole) (d-PPDTNTz) were synthesized by incorporating intrachain noncovalent Coulombic interactions in the molecular design. To achieve a delicate balance of molecular weight, solubility as well as bulk film morphology, hexyldecyloxy (h-) and decyltetradecyloxy (d-) side-chains were substituted, which played a decisive role in modulating morphology, film packing structure and macroscopic device properties. Both polymers showed a broad light absorption up to ~800 nm and d-PPDTNTz exhibited a deeper HOMO and preferentially face-on orientation in pristine and blended films with PC71BM. The detailed optical, electrochemical, thermal, morphological and the resulting photovoltaic characteristics were studied. The best power conversion efficiency of ~6.7% was measured for d-PPDTNTz:PC71BM, suggesting that the careful choice of side-chains is necessary for fully optimize the photovoltaic materials and devices.
| Original language | English |
|---|---|
| Pages (from-to) | 553-559 |
| Number of pages | 7 |
| Journal | Journal of Photopolymer Science and Technology |
| Volume | 29 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2016 Jan 1 |
Fingerprint
Keywords
- Naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole (NTz)
- Noncovalent coulombic interactions
- Photovoltaic
- Planarity
- Polymer solar cells (PSCs)
- Semi-crystalline
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry
Cite this
Thiophene and naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole based alternating copolymers for polymer solar cells. / Li, Yuxiang; Lee, Tack Ho; Kim, Jihyeon; Park, Song Yi; Song, Seyeong; Hwang, Sungu; Kim, Jin Young; Woo, Han Young.
In: Journal of Photopolymer Science and Technology, Vol. 29, No. 4, 01.01.2016, p. 553-559.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Thiophene and naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole based alternating copolymers for polymer solar cells
AU - Li, Yuxiang
AU - Lee, Tack Ho
AU - Kim, Jihyeon
AU - Park, Song Yi
AU - Song, Seyeong
AU - Hwang, Sungu
AU - Kim, Jin Young
AU - Woo, Han Young
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Two planar type photovoltaic polymers based on naphthobisthiadiazole, poly(2,5-bis(2-hexyldecyloxy)phenylene-alt-(5,10-dithiophen-2-yl)naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole) (h-PPDTNTz) and poly(2,5-bis(2-decyltetradecyloxy)phenylene-alt-(5,10-dithiophen-2-yl)naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole) (d-PPDTNTz) were synthesized by incorporating intrachain noncovalent Coulombic interactions in the molecular design. To achieve a delicate balance of molecular weight, solubility as well as bulk film morphology, hexyldecyloxy (h-) and decyltetradecyloxy (d-) side-chains were substituted, which played a decisive role in modulating morphology, film packing structure and macroscopic device properties. Both polymers showed a broad light absorption up to ~800 nm and d-PPDTNTz exhibited a deeper HOMO and preferentially face-on orientation in pristine and blended films with PC71BM. The detailed optical, electrochemical, thermal, morphological and the resulting photovoltaic characteristics were studied. The best power conversion efficiency of ~6.7% was measured for d-PPDTNTz:PC71BM, suggesting that the careful choice of side-chains is necessary for fully optimize the photovoltaic materials and devices.
AB - Two planar type photovoltaic polymers based on naphthobisthiadiazole, poly(2,5-bis(2-hexyldecyloxy)phenylene-alt-(5,10-dithiophen-2-yl)naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole) (h-PPDTNTz) and poly(2,5-bis(2-decyltetradecyloxy)phenylene-alt-(5,10-dithiophen-2-yl)naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole) (d-PPDTNTz) were synthesized by incorporating intrachain noncovalent Coulombic interactions in the molecular design. To achieve a delicate balance of molecular weight, solubility as well as bulk film morphology, hexyldecyloxy (h-) and decyltetradecyloxy (d-) side-chains were substituted, which played a decisive role in modulating morphology, film packing structure and macroscopic device properties. Both polymers showed a broad light absorption up to ~800 nm and d-PPDTNTz exhibited a deeper HOMO and preferentially face-on orientation in pristine and blended films with PC71BM. The detailed optical, electrochemical, thermal, morphological and the resulting photovoltaic characteristics were studied. The best power conversion efficiency of ~6.7% was measured for d-PPDTNTz:PC71BM, suggesting that the careful choice of side-chains is necessary for fully optimize the photovoltaic materials and devices.
KW - Naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole (NTz)
KW - Noncovalent coulombic interactions
KW - Photovoltaic
KW - Planarity
KW - Polymer solar cells (PSCs)
KW - Semi-crystalline
UR - http://www.scopus.com/inward/record.url?scp=84984985653&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84984985653&partnerID=8YFLogxK
U2 - 10.2494/photopolymer.29.553
DO - 10.2494/photopolymer.29.553
M3 - Article
AN - SCOPUS:84984985653
VL - 29
SP - 553
EP - 559
JO - Journal of Photopolymer Science and Technology
JF - Journal of Photopolymer Science and Technology
SN - 0914-9244
IS - 4
ER -