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Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab (ATOMS)
Research Interests
  • Optoelectronic materials synthesis/organic electronics, functionalization of carbonaceous solids, advanced materials chemistry, macromolecular chemistry


Control of Charge Dynamics via Use of Nonionic Phosphonate Chains and Their Effectiveness for Inverted Structure Solar Cells

DC Field Value Language Kim, Gyoungsik ko Song, Seyeong ko Lee, Jungho ko Kim, Taehyo ko Lee, Tack Ho ko Walker, Bright ko Kim, Jin Young ko Yang, Changduk ko 2015-10-26T02:31:49Z - 2015-10-26 ko 2015-09 ko
dc.identifier.citation ADVANCED ENERGY MATERIALS, v.5, no.18, pp.1500844 ko
dc.identifier.issn 1614-6832 ko
dc.identifier.uri -
dc.description.abstract Considering that a high compatibility at hybrid organic/inorganic interfaces can be achieved using polar and hydrophilic functionalities, this approach is used to improve inverted polymer solar cell performance by introducing nonionic phosphonate side chains (at 0%, 5%, 15%, and 30% substitution levels) into a series of isoindigo-based polymers (PIIGDT-Pn). This approach led to approximate to 20% improvement in power conversion efficiency compared to a nonmodified control polymer, via an increased short-circuit current (J(SC)). This enhancement is believed to stem from reduced nongerminate recombination and improved charge carried extraction when the level of phosphonate substitution is optimized. These results are substantiated by a combination of detailed electrical measurements including space-charged limited current modeling, light intensity-dependent photocurrent (J(ph)) analysis, and morphological studies (grazing-incidence wide-angle X-ray scattering and atomic force microscopy). This is the first practical report demonstrating the use of nonionic polar side chains to control charge carrier dynamics in an existing photovoltaic polymer structure. It is envisioned that this simple strategy may be applied to other material systems and yield new materials with the potential for even higher performance ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Control of Charge Dynamics via Use of Nonionic Phosphonate Chains and Their Effectiveness for Inverted Structure Solar Cells ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84942922251 ko
dc.identifier.wosid 000362161500010 ko
dc.type.rims ART ko
dc.description.wostc 0 *
dc.description.scopustc 0 * 2015-12-28 * 2015-11-04 *
dc.identifier.doi 10.1002/aenm.201500844 ko
dc.identifier.url ko
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