Scalable, “Dip‐and‐Dry” Fabrication of a Wide‐Angle Plasmonic Selective Absorber for High‐Efficiency Solar–Thermal Energy Conversion
Abstract
A galvanic‐displacement‐reaction‐based, room‐temperature “dip‐and‐dry” technique is demonstrated for fabricating selectively solar‐absorbing plasmonic‐nanoparticle‐coated foils (PNFs). The technique, which allows for facile tuning of the PNFs' spectral reflectance to suit different radiative and thermal environments, yields PNFs which exhibit excellent, wide‐angle solar absorptance (0.96 at 15°, to 0.97 at 35°, to 0.79 at 80°), and low hemispherical thermal emittance (0.10) without the aid of antireflection coatings. The thermal emittance is on par with those of notable selective solar absorbers (SSAs) in the literature, while the wide‐angle solar absorptance surpasses those of previously reported SSAs with comparable optical selectivities. In addition, the PNFs show promising mechanical and thermal stabilities at temperatures of up to 200 °C. Along with the performance of the PNFs, the simplicity, inexpensiveness, and environmental friendliness of the “dip‐and‐dry” technique makes it an appealing alternative to current methods for fabricating selective solar absorbers.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 28, 2017
- Source ID
- 10.1002/adma.201702156
Entities
People
- Adam C Overvig
- Amirali Zangiabadi
- Cheng Qian
- Daniel Paley
- Derek Wang
- Jyotirmoy Mandal
- Katayun Barmak
- Nanfang Yu
- Norman N Shi
- Yuan Yang
Organizations
- Air Force Office of Scientific Research
- Columbia University
- National Science Foundation
- Stanford University