Tn SO E T 1 -E Tn . The latter is three orders of magnitude larger than the former. Associating with the vibrational function factors, we estimate that the contribution of SVC to the ISC and RISC rates will roughly be one order of magnitude larger than that of HTVC. We thus deduce that the SVC effect on the ISC and RISC rates of 7-PhQAD is predominant, agreeing with the previous prediction on the other MR-type TADF emitters.