Transient optical studies of interfacial charge transfer at nanostructured metal oxide/PbS quantum dot/oxide hole conductor heterojunctions

A transient absorption and luminescence study is used for addressing the charge separation, recombination and regeneration reactions at nanostructured metal oxide/PbS quantum dot/organic hole conductor heterojunctions. The studies have shown a correlation between the PbS particle size and the yield of charge separation at PbS/Sn[O.sub.2] interfaces, with a smaller PbS particle radius that has resulted in a higher yield of charge separation.