Stimulated Emission Properties of Sterically Modified Distyrylbenzene-Based H-Aggregate Single Crystals
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- 作者：Shinto Varghese ; Sang Kyu Park ; Santiago Casado ; Roland C. Fischer ; Roland Resel ; Bego帽a Mili谩n-Medina ; Reinhold Wannemacher ; Soo Young Park ; Johannes Gierschner
- 刊名：The Journal of Physical Chemistry Letters
- 出版年：2013
- 出版时间：May 16, 2013
- 年：2013
- 卷：4
- 期：10
- 页码：1597-1602
- 全文大小：374K
- 年卷期：v.4,no.10(May 16, 2013)
- ISSN：1948-7185
文摘
J-aggregation has been shown to be beneficial for light amplification in single crystals of 蟺-conjugated organic molecules. In the case of H-aggregation, the criteria for such processes are still under debate. It has also been shown that H-aggregate arrangements with considerable 蟺鈥撓€ overlap are detrimental for light amplification. We show here that a proper alignment of the molecules in the crystal lattice, which minimizes 蟺鈥撓€ overlap between adjacent molecules, gives rise to (random) stimulated emission from cofacial arrangements similar to that of the herringbone aggregates.