High-Temperature Photovoltaic Effect in La0.4Ca0.6MnO3/SiOx/Si Heterojunction. (22nd March 2012)

• Record Type: Journal Article
• Authors: Ni, Hao; Zhao, Kun; Liu, Xiaojin; Xiang, Wenfeng; Zhao, Songqing; Kong, Yu-Chau; Wong, Hong-Kuen
• Other Names: Sopori Bhushan Academic Editor.
• Is Part Of: International journal of photoenergy. Volume 2012(2012)
• Publication Date: 2012-03-22
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Photochimie; Photobiologie; Chimie physique et théorique; Chemistry, Physical and theoretical; Photobiology; Photochemistry; Electronic journals; Periodicals; 541.35
• DOI: 10.1155/2012/893962
• Languages: English
• ISSNs: 1110-662X

Abstract

Abstract : We fabricated a heterojunction of La 0.4 Ca 0.6 MnO 3 / SiO x / n -Si and investigated its electronic transport and ultraviolet photovoltaic properties at higher temperature up to 673 K. The rectifying behaviors vanished with the energy-band structure evolvement from 300 to 673 K. Under irradiation of a 248 nm pulse laser, the peak values of open-circuit photovoltage and short-circuit photocurrent decreased drastically. This understanding of the temperature-related current-voltage behavior and ultraviolet photodetection of oxide heterostructures should open a route for devising future microelectronic devices working at high temperature. PACS: 73.40.Lq, 71.27.+ a, 73.50.Pz.