| アイテムタイプ |
学術雑誌論文 / Journal Article.(1) |
| 公開日 |
2019-06-17 |
| 書誌情報 |
en : Physical Chemistry Chemical Physics
巻 21,
号 10,
p. 5695-5704,
発行日 2019
|
| タイトル |
|
|
タイトル |
Fluorescence enhancement induced by quadratic electric-field effects on dynamics of singlet exciton in poly(3-hexylthiophene) dispersed in poly(methyl methacrylate) |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
飯森, 俊文
AWASTHI, Kamlesh
CHIOU, Chin-Shiun
DIAU, Eric Wei-Guang
太田, 信廣
|
| 室蘭工業大学研究者データベースへのリンク |
|
|
表示名 |
飯森, 俊文(IIMORI, Toshifumi) |
|
URL |
http://rdsoran.muroran-it.ac.jp/html/100000029_ja.html |
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
The dynamics of the exciton generated by photoexcitation of regioregular poly(3-hexylthiophene) (P3HT) polymer dispersed into a poly(methyl methacrylate) (PMMA) matrix has been examined by using electro-photoluminescence (E-PL) spectroscopy, where electric field effects on photoluminescence (PL) spectra have been measured. The quadratic electric-field effect have been investigated by using the modulation technique, with which the field-induced change in PL intensity synchronized at the second harmonic of a modulation frequency of the applied electric fields was monitored. Absorption and PL spectra are indicative of the formation both of the ordered crystalline aggregates and of the amorphous regions of P3HT polymer chains. Although previous studies of the electric field effects on π-conjugated polymers showed, in general, that the PL intensity was decreased by electric fields, we report that the PL intensity of P3HT increases and the PL lifetime becomes longer, as the quadratic electric-field effect. The magnitude of the change in PL intensity was quantitatively explained in terms of the field-induced decrease in the nonradiative decay rate constants of exciton. We conjecture that a delayed PL which originates from the recombination of the charge carriers is enhanced in the presence of electric fields. It is also implied that the rate constant of the downhill relaxation process of the exciton, which originates from the relaxation in distributed energy levels due to inherent energetic disorder in P3HT aggregates, becomes smaller in the presence of electric fields. The radiative decay rate constant and PL quantum yield of P3HT dissolved in solution, which are evaluated from the molar extinction coefficient and the PL lifetime, are compared with the ones of P3HT dispersed in a PMMA matrix. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Royal Society of Chemistry |
|
言語 |
en |
| 出版者版へのリンク |
|
|
表示名 |
10.1039/C8CP07801G |
|
URL |
https://doi.org/10.1039/C8CP07801G |
| DOI |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1039/C8CP07801G |
| 日本十進分類法 |
|
|
主題Scheme |
NDC |
|
主題 |
431 |
| ISSN |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
14639076 |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11301773 |
| 権利 |
|
|
権利情報 |
© Royal Society of Chemistry 2019 |
|
言語 |
en |
| 著者版フラグ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
PCCP_21_10_5695_5704 (2.6 MB)
