High performance mid-temperature selective absorber based on titanium oxides cermet deposited by direct current reactive sputtering of a single titanium target

Tang, Lu; Cao, Feng; Li, Yang; Bao, Jiming; Ren, Zhifeng

doi:10.1063/1.4940386

High performance mid-temperature selective absorber based on titanium oxides cermet deposited by direct current reactive sputtering of a single titanium target

Journal Article · Mon Jan 25 00:00:00 EST 2016 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4940386· OSTI ID:1469184

^[1]; Cao, Feng ^[2]; Li, Yang ^[3]; Bao, Jiming ^[3]; Ren, Zhifeng ^[2]

Univ. of Houston, TX (United States). Dept. of Physics. Texas Center for Superconductivity (TcSUH); Univ. of Houston, TX (United States)
Univ. of Houston, TX (United States). Dept. of Physics. Texas Center for Superconductivity (TcSUH)
Univ. of Houston, TX (United States). Dept. of Electrical and Computer Engineering

This paper reports the design and fabrication of a new double cermet-based low-mid temperature solar selective absorber based on TiO_x cermet layers, which were deposited with a single Ti target by varying O₂ partial pressure in sputtering chamber as reactive gas. High metal volume fraction cermet 1 and low metal volume fraction cermet 2 were deposited with O₂ partial pressure of 0.15 mTorr and 0.25 mTorr, respectively, with direct current power density of 6.58 W cm^-2. The complex refractive indices from ellipsometry were used to design solar selective absorber. The reflectance, thermal stability, and morphology were studied in absorbers on Cu and stainless steel. The effect of TiO₂ and SiO₂ as anti-reflective coating layers was investigated. Finally, the absorber on Cu substrate has high absorptance of 90.8% and low emittance of 4.9% (100 °C), and changed to 96.0% and 6.6%, respectively, after annealing at 300 °C for 4 days.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Houston, TX (United States)

Sponsoring Organization:: National Science Foundation (NSF) (United States); Robert A. Welch Foundation (United States); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: SC0001299

OSTI ID:: 1469184

Alternate ID(s):: OSTI ID: 1235798

Journal Information:: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 4 Vol. 119; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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chemical elements
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High performance mid-temperature selective absorber based on titanium oxides cermet deposited by direct current reactive sputtering of a single titanium target

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