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Joint Photophysical and Electrical Analyses on the Influence of Conjugation Order in D-pi-A Photosensitizers of Mesoscopic Titania Solar Cells
Liu, Jingyuan1,2; Zhou, Difei2; Wang, Fangfang2; Fabregat-Santiago, Francisco3; Miralles, Sara G.3; Jing, Xiaoyan1; Bisquert, Juan3; Wang, Peng2
2011-07-28
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume115Issue:29Pages:14425-14430
AbstractDiverse thiophene-containing blocks have been employed as the pi-conjugated spacers of organic D-pi-A dyes. In the case that multiple segments with distinguishable electronic features are applied, their conjugation sequence could potently affect optoelectric behaviors of photosensitizers in mesoscopic titania solar cells. In this work, we address this issue by designing three organic dyes (C225, C226, and C227), wherein the dihexyl-substituted cyclopentadithiophene moiety is stepwise shifted from the electron acceptor side to the donor one, along with the additional use of two 3-hexylthiophene rings as the conjugated spacing unit. With respect to C225 and C226, C227 presents a relatively inefficient photoinduced electron injection as indicated by photoluminescence measurements, which accounts for its lower efficiencies of converting incident monochromatic photons to, collected electrons. Transient absorption measurements suggest that the charge redonibination between oxidized dye molecules and titania electrons gradually decelerates from C225 to C227, while the interception of oxidized dye molecules by iodide ions exhibits an apparent driving force dependent, Marcus normal region behavior.
DOI10.1021/jp203313b
Indexed BySCI
Language英语
WOS IDWOS:000292892500058
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/73642
Collection中国科学院化学研究所
Corresponding AuthorJing, Xiaoyan
Affiliation1.Harbin Engn Univ, Key Lab Superlight Mat & Surface Technol, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China
2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
3.Univ Jaume 1, Dept Phys, Photovolta & Optoelect Devices Grp, Castellon de La Plana 12071, Spain
Recommended Citation
GB/T 7714
Liu, Jingyuan,Zhou, Difei,Wang, Fangfang,et al. Joint Photophysical and Electrical Analyses on the Influence of Conjugation Order in D-pi-A Photosensitizers of Mesoscopic Titania Solar Cells[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2011,115(29):14425-14430.
APA Liu, Jingyuan.,Zhou, Difei.,Wang, Fangfang.,Fabregat-Santiago, Francisco.,Miralles, Sara G..,...&Wang, Peng.(2011).Joint Photophysical and Electrical Analyses on the Influence of Conjugation Order in D-pi-A Photosensitizers of Mesoscopic Titania Solar Cells.JOURNAL OF PHYSICAL CHEMISTRY C,115(29),14425-14430.
MLA Liu, Jingyuan,et al."Joint Photophysical and Electrical Analyses on the Influence of Conjugation Order in D-pi-A Photosensitizers of Mesoscopic Titania Solar Cells".JOURNAL OF PHYSICAL CHEMISTRY C 115.29(2011):14425-14430.
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