title: Direct evidence on the energy transfer of near-infrared emission in PbS quantum dot-doped glass.
abstract: PbS quantum dot (QD)-doped glass was prepared by the heat treatment of as-prepared glass, which was confirmed by transmission electron microscope (TEM), absorption and photoluminescence (PL) spectra. Choosing the glass heat treatment at 600°C for 24h as a representative sample, steady-state and transient-state PL, lifetime and time-resolve emission spectra (TRES) of PbS QD-doped glass were studied in detail. The results indicated that the lifetime spectra showed a similar variation tendency with the PL spectra. The steady-state, transient-state PL and TRES results first revealed the energy transfer process from smaller QDs with higher energy to bigger QDs with lower energy in the PbS QD-doped glass.
authors.forename: Haipeng
authors.initials: H
authors.lastname: Wang
authors.forename: Guobo
authors.initials: G
authors.lastname: Wu
authors.forename: Jianrong
authors.initials: J
authors.lastname: Qiu
authors.forename: Guoping
authors.initials: G
authors.lastname: Dong