Plasmon mediated cathodic photocurrent generation in sol-gel synthesized doped SrTiO3 nanofilms

Ramu Pasupathi Sugavaneshwar; Kai Chen; Gandham Lakshminarayana; Satoshi Ishii; Thang Duy Dao; Naoto Umezawa; Tadaaki Nagao

doi:10.1063/1.4935305

APL Materials (Nov 2015)

Plasmon mediated cathodic photocurrent generation in sol-gel synthesized doped SrTiO3 nanofilms

Ramu Pasupathi Sugavaneshwar,
Kai Chen,
Gandham Lakshminarayana,
Satoshi Ishii,
Thang Duy Dao,
Naoto Umezawa,
Tadaaki Nagao

Affiliations

Ramu Pasupathi Sugavaneshwar: International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Kai Chen: International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Gandham Lakshminarayana: International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Satoshi Ishii: International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Thang Duy Dao: International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Naoto Umezawa: CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
Tadaaki Nagao: International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

DOI: https://doi.org/10.1063/1.4935305
Journal volume & issue: Vol. 3, no. 11
pp. 116103 – 116103-6

Abstract

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Thin films of SrTiO3 (STO) and Rh-doped SrTiO3 (Rh-STO) were synthesized by sol-gel method and loaded with Ag nanoparticles. Pristine STO films exhibited anodic photocurrent while Rh-STO exhibited cathodic photocurrent. An enhancement in the overall cathodic photocurrent is observed with Ag nanoparticle loading and an additional enhancement in the visible light range is seen from the incident photon-to-current efficiency spectrum due to synergetic effect of Rh doping and Ag loading in STO.

Published in APL Materials

ISSN: 2166-532X (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology; Science: Physics
Website: http://aplmaterials.aip.org

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