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Improved Efficiency of Bulk Heterojunction Polymer Solar Cells by Doping Low-Bandgap Small Molecules
An, Qiaoshi1; Zhang, Fujun1; Li, Lingliang1; Wang, Jian1; Zhang, Jian2; Zhou, Lingyu2; Tang, Weihua3
KeywordPolymer Solar Cells Ternary Bulk Heterojunction Low Bandgap Materials Energy Transfer
Source PublicationACS APPLIED MATERIALS & INTERFACES
2014-05-14
DOI10.1021/am500074s
Volume6Issue:9Pages:6537-6544
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS KeywordOPEN-CIRCUIT VOLTAGE ; ORGANIC PHOTOVOLTAICS ; IR SENSITIZATION ; TERNARY BLENDS ; GAP POLYMER ; PERFORMANCE ; P3HT/PCBM ; MORPHOLOGY ; ACCEPTOR ; DEVICES
AbstractWe present performance improved ternary bulk heterojunction polymer solar cells by doping a small molecule, 2,4-bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl] squaraine (DIB-SQ), into the common binary blend of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM). The optimized power conversion efficiency (PCE) of P3HT:PC71BM-based cells was improved from 3.05% to 3.72% by doping 1.2 wt % DIB-SQ as the second electron donor, which corresponds to, similar to 22% PCE enhancement. The main contributions of doping DIB-SQ material on the improved performance of PSCs can be summarized as (i) harvesting more photons in the low-energy range, (ii) increased exciton dissociation, energy transfer, and charge carrier transport in the ternary blend films. The energy transfer process from P3HT to DIB-SQ is demonstrated by time-resolved transient photoluminescence spectra through monitoring the lifetime of 700 nm emission from neat P3HT, DIB-SQ and blended P3HT:DIB-SQ solutions. The lifetime of 700 nm emission is increased from 0.9 ns for neat P3HT solution, to 4.9 ns for neat DIB-SQ solution, to 6.2 ns for P3HT:DIB-SQ blend solution.
Language英语
WOS IDWOS:000336075300065
Citation statistics
Cited Times:74[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145452
Collection中国科学院大连化学物理研究所
Affiliation1.Beijing Jiaotong Univ, Key Lab Luminescence & Opt Informat, Minist Educ, Beijing 100044, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Nanjing Univ Sci & Technol, Key Lab Soft Chem & Funct Mat, Minist Educ, Nanjing 210094, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
An, Qiaoshi,Zhang, Fujun,Li, Lingliang,et al. Improved Efficiency of Bulk Heterojunction Polymer Solar Cells by Doping Low-Bandgap Small Molecules[J]. ACS APPLIED MATERIALS & INTERFACES,2014,6(9):6537-6544.
APA An, Qiaoshi.,Zhang, Fujun.,Li, Lingliang.,Wang, Jian.,Zhang, Jian.,...&Tang, Weihua.(2014).Improved Efficiency of Bulk Heterojunction Polymer Solar Cells by Doping Low-Bandgap Small Molecules.ACS APPLIED MATERIALS & INTERFACES,6(9),6537-6544.
MLA An, Qiaoshi,et al."Improved Efficiency of Bulk Heterojunction Polymer Solar Cells by Doping Low-Bandgap Small Molecules".ACS APPLIED MATERIALS & INTERFACES 6.9(2014):6537-6544.
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