I'm interested in using vacuum thermal evaporation (VTE) to deposit organic small molecules onto glass substrates. I have experience evaporating fullerenes and some organic interlayers (BCP) but they have all had rather high melting points (250C by DSC) and decomposition temperatures (~400C by TGA). The materials I'm interested in trying have much lower parameters (melt at 175C, decompose at ~350C).
For those of you with more experience, what was the lowest decomposition temperature of materials that you've used? Thank you for your help!
Generally all of those organic materials which do not decompose/degrade soon after melting and can evaporate in vacuum can be deposited whether they melt at 175 C or 250 C.
Thank you! That's great to know. I'll double-check TGA curves to see if there's evidence of degradation at lower temps.
Hello dear, you can use crystalline compound of low molecular weight, in semicrystalline or crystalline materials, always the melting point is observed before thermal decomposition, for example some carbohydrates.
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