Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Possible high absorptance and low emittance selective surface for high temperature solar thermal collectors

Not Accessible

Your library or personal account may give you access

Abstract

Optical reflectivity measurements show that the reflectivity of Ge is dramatically reduced in the wavelength 0.3–1.4-μm range after high dose oxygen ion implantation. To explain such greatly reduced reflectivity, a model has been developed for the reflectivity of high dose oxygen implanted germanium. Our experimentally measured and calculated reflectivities show that, for a layered structure consisting of a Ge and GeO2 mixture on Ge on GeO2 on a Cu substrate, a low reflectivity of 0–10% in the solar spectrum is obtained, together with a high reflectivity ~100% in the 1.7–25-μm wavelength range. This is close to that of an ideal selective surface for solar energy thermal collectors operating at high temperatures from 300 to 500°C.

© 1991 Optical Society of America

Full Article  |  PDF Article
More Like This
Angular solar absorptance of absorbers used in solar thermal collectors

Tuquabo Tesfamichael and Ewa Wäckelgård
Appl. Opt. 38(19) 4189-4197 (1999)

Spectral selectivity of high-temperature solar absorbers

D. M. Trotter and A. J. Sievers
Appl. Opt. 19(5) 711-728 (1980)

Limits of solar selective surface performance

D. R. Mills
Appl. Opt. 24(20) 3374-3380 (1985)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved