Exploiting Intersubband Plasmons in Vertically Aligned Carbon Nanotubes for Near-Infrared Electrochromic Windows
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Optically transparent materials with switchable near-infrared (NIR) transmissivity are of significant interest for energy-saving smart window technologies. To this end, we demonstrate that semitransparent films of vertically aligned carbon nanotubes (CNTs) incorporated into electrochemically gated devices exhibit NIR transmittance changes up to 47% and bistable optical states that are appealing for low-power, large-area operation. The tunable NIR electrochromic response is driven by a doping-induced intersubband plasmon (ISBP) absorption, an optical feature in CNTs that is selective to light polarized perpendicular to the CNT axis. Vertically aligned CNT films (as opposed to more conventional planar CNT mats) thus allow us to isolate and study the ISBP resonance changes with applied voltage, electrode material, and film thickness.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-05CH11231; AC52-07NA27344
- OSTI ID:
- 2587131
- Report Number(s):
- LLNL-JRNL--2001751
- Journal Information:
- Nano Letters, Journal Name: Nano Letters Journal Issue: 31 Vol. 25; ISSN 1530-6992; ISSN 1530-6984
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nanostructured electrochromic smart windows: traditional materials and NIR-selective plasmonic nanocrystals
Subject Responses to Electrochromic Windows
Oxygen-promoted catalyst sintering influences number density, alignment, and wall number of vertically aligned carbon nanotubes
Journal Article
·
Wed Jun 04 00:00:00 EDT 2014
· ChemComm
·
OSTI ID:1211267
Subject Responses to Electrochromic Windows
Journal Article
·
Thu Mar 02 23:00:00 EST 2006
· Energy and Buildings
·
OSTI ID:898558
Oxygen-promoted catalyst sintering influences number density, alignment, and wall number of vertically aligned carbon nanotubes
Journal Article
·
Mon Apr 10 20:00:00 EDT 2017
· Nanoscale
·
OSTI ID:1376047