Phosphorescence superradiance in a Pt-containing π-conjugated polymer
作者： Bagrat Khachatryan , Tho D. Nguyen , Z. Valy Vardeny , Eitan Ehrenfreund
DOI: 10.1103/PHYSREVB.86.195203
关键词: Emission spectrum 、 Materials science 、 Raman scattering 、 Line (formation) 、 Exciton 、 Excitation 、 Absorption (electromagnetic radiation) 、 Molecular physics 、 Superradiance 、 Phosphorescence
摘要: We used a variety of optical probes to investigate the triplet excitons platinum containing \ensuremath{\pi}-conjugated polymer (Pt1) having large spin-orbit interaction, in form films and solid state solutions. The include absorption, photoinduced emission spectroscopy their corresponding dynamics, as well excitation dependencies. found that intensity 0-0 line vibrationally resolved phosphorescence spectrum anomalously increases at low temperatures Pt1 films, but less so solutions, or when using below-gap excitation. Making use measured Raman scattering we analyze vibration progression spectrum, conclude increase is due interact coherently temperatures, giving rise superradiance.
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