Interfacial polaron in quantum dots and luminescent porous silicon

Polaronic effect fs important in the current researches on quantum dots (QD ). This paper reported a new concept of the "confined polaron", their size dependent formation possibilities and energy variation in different QD syst ems, with an indication of contribution from both intrinsic and/or extrinsi c phonons, To understand the spectroscopic characteristics of porous silico n (PS), we find that luminescence behavior of oxidized porous silicon fs in good agreement with the model of interfacial confined polaron in QDs. This conclusion is useful to unveiling the mechanmism of PS luminescence.