Article: Diketo-pyrrolo-pyrrole-based medium band gap copolymers for efficient plastic solar cells: Morphology, transport, and composition-dependent photovoltaic behavior
| Title | Diketo-pyrrolo-pyrrole-based medium band gap copolymers for efficient plastic solar cells: Morphology, transport, and composition-dependent photovoltaic behavior | ||||||
|---|---|---|---|---|---|---|---|
| Authors | Chen, L1 2 Deng, D1 Nan, Y1 Shi, M1 Chan, PKL2 Chen, H1 | ||||||
| Keywords | Conversion Efficiency Copolymerization Copolymers Energy Gap Heterojunctions Nanostructured Materials Nitrogen Compounds Open Circuit Voltage Solar Power Generation | ||||||
| Issue Date | 2011 | ||||||
| Publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jpccck/ | ||||||
| Citation | Journal Of Physical Chemistry C, 2011, v. 115 n. 22, p. 11282-11292 [How to Cite?] DOI: http://dx.doi.org/10.1021/jp201104s | ||||||
| Abstract | Two diketo-pyrrolo-pyrrole-based donor-acceptor copolymers, PCPDT-PDPP and PDTP-PDPP, were synthesized and applied as p-type component for bulk heterojunction solar cells. Using a facile molecular engineering of the main chain linking bridge, we have successfully tuned the band gap of the materials from low to medium level, which results in an improved balance between the device open circuit voltage and short circuit current. The power conversion efficiencies of the polymer/PC 70BM combinations achieve 2.03% (PCPDT-PDPP) and 1.32% (PDTP-PDPP) without any interface engineering or post-treatment. A totally different composition-dependent photovoltaic behavior was also discovered for each of the two materials, although they share similar donor-acceptor (D-A) structure. Morphological and photophysical studies reveal a phase structure dominated, light harvesting subordinated mechanism, in which some nonkernel molecular level factors, such as the branch chain density and the molecular weight, are found to play important roles. © 2011 American Chemical Society. | ||||||
| ISSN | 1932-7447 2011 Impact Factor: 4.805 2011 SCImago Journal Rankings: 0.435 | ||||||
| DOI | http://dx.doi.org/10.1021/jp201104s | ||||||
| ISI Accession Number ID | WOS:000291079900043
Funding Information: We wish to thank the National Natural Science Foundation of China (Grants 50990063, 20774083, and 51011130028) and the HKSAR Research Grant Council (Grants, PolyU 5117/09E and PolyU 5112/08E) for financial support. | ||||||
| References | References in Scopus |
| dc.contributor.author | Chen, L | ||||||
|---|---|---|---|---|---|---|---|
| dc.contributor.author | Deng, D | ||||||
| dc.contributor.author | Nan, Y | ||||||
| dc.contributor.author | Shi, M | ||||||
| dc.contributor.author | Chan, PKL | ||||||
| dc.contributor.author | Chen, H | ||||||
| dc.date.accessioned | 2011-09-27T02:58:14Z | ||||||
| dc.date.available | 2011-09-27T02:58:14Z | ||||||
| dc.date.issued | 2011 | ||||||
| dc.description.abstract | Two diketo-pyrrolo-pyrrole-based donor-acceptor copolymers, PCPDT-PDPP and PDTP-PDPP, were synthesized and applied as p-type component for bulk heterojunction solar cells. Using a facile molecular engineering of the main chain linking bridge, we have successfully tuned the band gap of the materials from low to medium level, which results in an improved balance between the device open circuit voltage and short circuit current. The power conversion efficiencies of the polymer/PC 70BM combinations achieve 2.03% (PCPDT-PDPP) and 1.32% (PDTP-PDPP) without any interface engineering or post-treatment. A totally different composition-dependent photovoltaic behavior was also discovered for each of the two materials, although they share similar donor-acceptor (D-A) structure. Morphological and photophysical studies reveal a phase structure dominated, light harvesting subordinated mechanism, in which some nonkernel molecular level factors, such as the branch chain density and the molecular weight, are found to play important roles. © 2011 American Chemical Society. | ||||||
| dc.description.nature | link_to_subscribed_fulltext | ||||||
| dc.identifier.citation | Journal Of Physical Chemistry C, 2011, v. 115 n. 22, p. 11282-11292 [How to Cite?] DOI: http://dx.doi.org/10.1021/jp201104s | ||||||
| dc.identifier.doi | http://dx.doi.org/10.1021/jp201104s | ||||||
| dc.identifier.eissn | 1932-7455 | ||||||
| dc.identifier.epage | 11292 | ||||||
| dc.identifier.isi | WOS:000291079900043
Funding Information: We wish to thank the National Natural Science Foundation of China (Grants 50990063, 20774083, and 51011130028) and the HKSAR Research Grant Council (Grants, PolyU 5117/09E and PolyU 5112/08E) for financial support. | ||||||
| dc.identifier.issn | 1932-7447 2011 Impact Factor: 4.805 2011 SCImago Journal Rankings: 0.435 | ||||||
| dc.identifier.issue | 22 | ||||||
| dc.identifier.scopus | eid_2-s2.0-79958748184 | ||||||
| dc.identifier.spage | 11282 | ||||||
| dc.identifier.uri | http://hdl.handle.net/10722/141691 | ||||||
| dc.identifier.volume | 115 | ||||||
| dc.language | eng | ||||||
| dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jpccck/ | ||||||
| dc.publisher.place | United States | ||||||
| dc.relation.ispartof | Journal of Physical Chemistry C | ||||||
| dc.relation.references | References in Scopus | ||||||
| dc.subject | Conversion Efficiency | ||||||
| dc.subject | Copolymerization | ||||||
| dc.subject | Copolymers | ||||||
| dc.subject | Energy Gap | ||||||
| dc.subject | Heterojunctions | ||||||
| dc.subject | Nanostructured Materials | ||||||
| dc.subject | Nitrogen Compounds | ||||||
| dc.subject | Open Circuit Voltage | ||||||
| dc.subject | Solar Power Generation | ||||||
| dc.title | Diketo-pyrrolo-pyrrole-based medium band gap copolymers for efficient plastic solar cells: Morphology, transport, and composition-dependent photovoltaic behavior | ||||||
| dc.type | Article |
Author Affiliations
- State Key Laboratory of Silicon Material Science
- Hong Kong Polytechnic University