Photoluminescence efficiency of substituted quaterthiophene crystals

被引：44

作者：

Gigli, G

Della Sala, F

Lomascolo, M

Anni, M

Barbarella, G

Di Carlo, A

Lugli, P

Cingolani, R

机构：

[1] Univ Lecce, Dipartimento Ingn Innovazione, Ist Nazl Fis Mat, I-73100 Lecce, Italy

[2] Univ Roma Tor Vergata, Dipartimento Ingn Elettron, Ist Nazl Fis Mat, I-00133 Rome, Italy

[3] Icocea, CNR, Area Ric, I-40129 Bologna, Italy

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.86.167

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The photoluminescence (PL) efficiency of substituted alpha -conjugated quaterthiophene crystals shows marked differences depending on crystal packing and molecular geometry. This effect is studied by evaluating the role of the intermolecular interactions and the effects of the single molecule conformation on the intersystem crossing (ISC) rate. The comparison of these calculations with absolute quantum effciency measurements and with the experimental temperature dependence of the PL decay time, indicates that the differences in PL efficiency are not inherent to crystal packing effects but they an determined by the ISC rate.

引用

页码：167 / 170

页数：4

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