Photoluminescence at lower temperature of carbazole

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The discussion focuses on the photoluminescence (PL) behavior of a thin film of hole transport material (HTM) based on carbazole at lower temperatures. It highlights the observation of the disappearance of specific PL peaks at 300K and 200K, prompting questions about the nature of interactions in organic compounds at these temperatures. Participants are encouraged to explore the underlying mechanisms affecting PL in this context. The inquiry suggests a need for a deeper understanding of temperature-dependent photophysical properties. Overall, the thread seeks insights into the interactions influencing PL in carbazole films at varying temperatures.
EL AALLAOUI Najla
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photoluminescence at lower temperature of carbazole
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photoluminescence at lower temperature of carbazole
Hello everyone,
I deposit a thin film of HTM based carbazole and I measure the PL at lower tempertaure . by fiiting the experimental results with 5 peaks . I notice the dissapering of peak 1 at 300K and peak 3 at 200K. What is the nature of the interaction that can occur at lower temperature of organic compounds and how I can explain that .

Thank you in advance
 
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