title: Photosensing performance of branched CdS/ZnO heterostructures as revealed by in situ TEM and photodetector tests.
abstract: CdS/ZnO branched heterostructures have been successfully synthesized by combining thermal vapour deposition and a hydrothermal method. Drastic optoelectronic performance enhancement of such heterostructures was revealed, compared to plain CdS nanobelts, as documented by comparative in situ optoelectronic studies on corresponding individual nanostructures using an originally designed laser-compatible transmission electron microscopy (TEM) technique. Furthermore, flexible thin-film based photodetectors based on standard CdS nanobelts and newly prepared CdS/ZnO heterostructures were fabricated on PET substrates, and comparative photocurrent and photo-responsivity measurements thoroughly verified the in situ TEM results. The CdS/ZnO branched heterostructures were found to have better performance than standard CdS nanobelts for optoelectronic applications with respect to the photocurrent to dark current ratio and responsivity.
authors.affiliation: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan. golberg.dmitri@nims.go.jp wei.tian@nims.go.jp.
authors.forename: Chao
authors.initials: C
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Tian
authors.forename: Zhi
authors.initials: Z
authors.lastname: Xu
authors.forename: Xi
authors.initials: X
authors.lastname: Wang
authors.forename: Jiangwei
authors.initials: J
authors.lastname: Liu
authors.forename: Song-Lin
authors.initials: SL
authors.lastname: Li
authors.forename: Dai-Ming
authors.initials: DM
authors.lastname: Tang
authors.forename: Dequan
authors.initials: D
authors.lastname: Liu
authors.forename: Meiyong
authors.initials: M
authors.lastname: Liao
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Bando
authors.forename: Dmitri
authors.initials: D
authors.lastname: Golberg