Spatially resolved micro-photoluminescence imaging of porphyrin single crystals
作者： Michael G. Walter , Dawn M. Marin , Jose Castaneda , Meesha Kaushal , Ghallia Kaouk
DOI: 10.1016/J.CPLETT.2016.06.057
关键词: Exciton 、 Photoluminescence 、 Molecular electronics 、 Physics 、 Optoelectronics 、 Microscope 、 Porphyrin 、 Photon counting 、 Nanotechnology 、 Thin film 、 Organic solar cell
摘要: Abstract We describe the collection of both time-resolved and steady-state micro-photoluminescence data from solution-grown single crystals 5,15-bis(4-carbomethoxyphenyl)porphyrin (BCM 2 PP). Linking molecular orientation structure with excited-state dynamics is crucial for engineering efficient organic solar cells, light-emitting diodes, related electronics. Photoluminescence features porphyrin were imaged using a laser scanning confocal microscope equipped time-correlated photon counting (TCSPC). show enhanced exciton lifetimes ( τ s1 = 2.6 ns) stronger emission in crystalline BCM PP samples relative to semicrystalline thin films = 1.8 ns).
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