Excitons in organic semiconductors possessing a large oscillator strength demonstrate strong coupling with cavity modes at room temperature. A large Stokes shift in some organic semiconductors enriches and complicates the picture of the emission in strongly coupled systems of organic excitons and light. Here, we demonstrate strong coupling of excitons in 4,4-bis(N-carbazolyl)-1,1-biphenyl (CBP) and Tamm plasmons in the ultraviolet (UV) band, accompanied by a bright emission from the structure. Reflection measurements demonstrate the pronounced formation of the lower and upper polariton modes with Rabi splitting of the magnitude of 0.3 eV, and the emission peak experiences a substantial red shift with respect to the lower polariton mode. Both radiative and nonradiative decay rates in the Tamm plasmon CBP structure are increased with respect to a bare CBP. Such peculiar behavior is attributed to the simultaneous manifestation of strong coupling and weak coupling of the CBP molecule emitters to the Tamm plasmons.

中文翻译：

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在强耦合条件下从有机基Tamm等离子体结构发出的有效UV发光。

具有大振荡器强度的有机半导体中的激子在室温下表现出与腔模的强耦合。在某些有机半导体中，斯托克斯频移很大，这使有机激子和光的强耦合系统中的发射图变得更加复杂和复杂。在这里，我们证明了激子在4,4-bis（N-咔唑基）-1,1-联苯（CBP）和Tamm等离子体激元在紫外（UV）波段，并伴随着结构的明亮发射。反射测量结果显示，上下极化子模式明显形成，Rabi分裂幅度为0.3 eV，并且发射峰相对于下极化子模式发生了明显的红移。相对于裸露的CBP，Tamm等离子体激元CBP结构中的辐射衰减率和非辐射衰减率均增加。这种特殊的行为归因于CBP分子发射体与Tamm等离子体激元的强耦合和弱耦合的同时表现。