Evidence of polarized charge-transfer transitions by probing the weak dielectric tensor components of oligothiophene crystals

Tavazzi S; Laicini M; Raimondo L; Spearman P; Borghesi A; Papagni A; Trabattoni S

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Evidence of polarized charge-transfer transitions by probing the weak dielectric tensor components of oligothiophene crystals

机译：通过探测低聚噻吩晶体的弱介电张量分量来极化电荷转移跃迁的证据

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The absorption spectra of different oligothiophene single crystals without saturation effects in a wide spectral range are reported and compared. The origin of the main ac polarized broad band is discussed in terms of Frenkel excitons. Exploiting experimental configurations which correspond to the excitation of the weak dielectric tensor components, bands of different nature are also detected at different positions for orthogonal polarizations and attributed to transitions of charge-transfer character. (c) 2006 Elsevier B.V. All rights reserved.

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《Applied Surface Science》 |2006年第1期|p. 296-299|共4页
作者
Tavazzi S; Laicini M; Raimondo L; Spearman P; Borghesi A; Papagni A; Trabattoni S;
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作者单位

Univ Milano Bicocca, CNISM, I-20125 Milan, Italy;

Kingston Univ, Sch Chem & Pharmaceut Sci, Kingston upon Thames KT1 2EE, Surrey, England;

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原文格式 PDF
正文语种 eng
中图分类应用物理学;
关键词
charge-transfer; oligothiophene; polarized; SEXITHIOPHENE SINGLE-CRYSTAL; ALPHA-SEXITHIOPHENE; MOLECULAR-CRYSTALS; SPECTRA; DISPERSION;

机译：电荷转移;低聚噻吩;极化;六环庚二烯单晶;α-六环庚二烯;分子晶体;光谱;分散;

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Evidence of polarized charge-transfer transitions by probing the weak dielectric tensor components of oligothiophene crystals

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