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Epitaxy-Assisted Creation of PCBM Nanocrystals and Its Application in Constructing Optimized Morphology for Bulk-Heterojunction Polymer Solar Cells
Li, Ligui; Lu, Guanghao; Li, Sijun; Tang, Haowei; Yang, Xiaoniu
2008-12-11
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
ISSN1520-6106
Volume112Issue:49Pages:15651-15658
AbstractPCBM (a C(60) derivative) is so far the most successful electron acceptor for bulk-heterojunction polymer photovoltaic (PV) cells. Here we present a novel method epitaxy-assisted creation of PCBM nanocrystals and their homogeneous distribution in the matrix using freshly cleaved mica sheet as the substrate. The highly matched epitaxy relationship between the unit cell of PCBM crystal and crystallographic (001) surface of mica induces abundant PCBM nuclei, which subsequently develop into nanoscale crystals with homogeneous dispersion in the composite film. Both the shape and size of these nanocrystals could be tuned via choosing the type of matrix polymer, film thickness, ratio of PCBM in the composite film, and annealing temperature. Thus, the obtained thin composite film is removed from the original mica substrate via the flotation technique and transferred to a real substrate for device completion. The success of this method has been verified by the substantially improved device performance, in particular the increased short-circuit current, which is heavily dependent on the morphology of the photoactive layer. Therefore, we have actually demonstrated a novel approach to construct preferred morphology for high-performance optoelectronic devices via resorting to other specific substrates which could induce the formation of this type morphology.
DOI10.1021/jp8081529
Indexed BySCI
Language英语
WOS IDWOS:000261426500017
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/64148
Collection中国科学院化学研究所
Corresponding AuthorYang, Xiaoniu
AffiliationChinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Li, Ligui,Lu, Guanghao,Li, Sijun,et al. Epitaxy-Assisted Creation of PCBM Nanocrystals and Its Application in Constructing Optimized Morphology for Bulk-Heterojunction Polymer Solar Cells[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2008,112(49):15651-15658.
APA Li, Ligui,Lu, Guanghao,Li, Sijun,Tang, Haowei,&Yang, Xiaoniu.(2008).Epitaxy-Assisted Creation of PCBM Nanocrystals and Its Application in Constructing Optimized Morphology for Bulk-Heterojunction Polymer Solar Cells.JOURNAL OF PHYSICAL CHEMISTRY B,112(49),15651-15658.
MLA Li, Ligui,et al."Epitaxy-Assisted Creation of PCBM Nanocrystals and Its Application in Constructing Optimized Morphology for Bulk-Heterojunction Polymer Solar Cells".JOURNAL OF PHYSICAL CHEMISTRY B 112.49(2008):15651-15658.
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