Photoluminescence at lower temperature of carbazole

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EL AALLAOUI Najla
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Homework Statement
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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