title: Optical properties of quantum-dot-decorated polymer nanofibers.
abstract: We report a one-step process for decorating poly(trimethylene terephthalate) (PTT) nanofibers with CdSe/ZnS core/shell quantum dots (QDs). Using the QD-decorated PTT nanofibers with diameters of 400-800 nm as active subwavelength waveguides, their high photostability for 630 nm red light and low absorption coefficient down to 2.6 cm( - 1) were characterized by both evanescent waveguiding excitation and irradiation excitation. Compared with the irradiation excitation, a 200 times enhancement was obtained from the active subwavelength waveguides under the evanescent waveguiding excitation.
authors.affiliation: State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
authors.forename: Huaqing
authors.initials: H
authors.lastname: Yu
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.forename: Baojun
authors.initials: B
authors.lastname: Li