Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 강용수 | - |
dc.date.accessioned | 2018-02-22T02:07:16Z | - |
dc.date.available | 2018-02-22T02:07:16Z | - |
dc.date.issued | 2012-06 | - |
dc.identifier.citation | The Journal of Physical Chemistry Part C,Vol.116 No.11 [2012],p6770-6777 | en_US |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/jp210360n | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/39352 | - |
dc.description.abstract | A novel poly(ethylene glycol) (PEG) based oligomeric coadsorbent was employed to passivate TiO2 photoanodes resulting in the large increase in both open-circuit voltage (Voc) and short-circuit current density (J(sc)) primarily because of the reduced electron recombination by the effective coverage of vacant sites as well as the negative band-edge shift of TiO2. The effective suppression of electron recombination was evidenced by electrochemical impedance spectroscopy (EIS) and by stepped light-induced transient measurements of photocurrent and voltage (SLIM-PCV). The work function measurements also showed that the existence of coadsorbents on TiO2 interfaces is capable of shifting the band-edge of TiO2 photoanodes upwardly resulting in the increase in photovoltage. In addition, the coadsorbent was proven to be effective even in the presence of common additives such as UT, 4-tert-butylpyridine, and guanidinium thiocyanate. The effect of Li+ cation trapping by ethylene oxide units of the coadsorbent was particularly notable to significantly increase V-oc at a small expense of J(sc). Consequently, the introduction of novel PEG-based oligomeric coadsorbents for TiO2 photoanodes is quite effective in the improvement of photovoltaic performance because of the simultaneous increase in both V-oc and L-sc. | en_US |
dc.description.sponsorship | This work was supported by the Basic Science Research Program for the Center for Next Generation Dye-Sensitized Solar Cells (No. 2011-0001055) and the National Creative Research Initiative Center for Intelligent Hybrids (No. 2010-0018290) through the National Research Foundation of Korea (NRF) grants as well as the WCU Programs (R31-10013 and R31-10092) and the BK21 Programs funded by the Ministry of Education, Science, and Technology (MEST) of Korea. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMERICAN CHEMICAL SOCIETY | en_US |
dc.subject | PHOTOVOLTAIC PERFORMANCE | en_US |
dc.subject | NANOCRYSTALLINE TIO2 | en_US |
dc.subject | CHARGE RECOMBINATION | en_US |
dc.subject | MOLECULAR-DYNAMICS | en_US |
dc.subject | COUMARIN-DYE | en_US |
dc.subject | EFFICIENCY | en_US |
dc.subject | ELECTROLYTE | en_US |
dc.subject | ACID | en_US |
dc.subject | FILMS | en_US |
dc.subject | PHOTOCURRENT | en_US |
dc.title | Effective Passivation of Nanostructured TiO2 Interfaces with PEG-Based Oligomeric Coadsorbents To Improve the Performance of Dye-Sensitized Solar Cells | en_US |
dc.type | Article | en_US |
dc.relation.no | 11 | - |
dc.relation.volume | 116 | - |
dc.identifier.doi | 10.1021/jp210360n | - |
dc.relation.page | 6770-6777 | - |
dc.relation.journal | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.contributor.googleauthor | Lee, Yong-Gun | - |
dc.contributor.googleauthor | Park, Suil | - |
dc.contributor.googleauthor | Cho, Woohyung | - |
dc.contributor.googleauthor | Son, Taewoo | - |
dc.contributor.googleauthor | Sudhagar, P | - |
dc.contributor.googleauthor | Jung, June Hyuk | - |
dc.contributor.googleauthor | Wooh, Sanghyuk | - |
dc.contributor.googleauthor | Char, Kookheon | - |
dc.contributor.googleauthor | Kang, Yong Soo | - |
dc.relation.code | 2012215273 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF ENERGY ENGINEERING | - |
dc.identifier.pid | kangys | - |
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