TY - JOUR
T1 - Solar spectral management with electrochromic devices including PMMA films doped with biluminescent ionosilicas
AU - Cardoso, Marita A.
AU - Correia, Sandra F. H.
AU - Gonçalves, Helena M. R.
AU - Pereira, Rui F. P.
AU - Pereira, Sónia
AU - Maria, Teresa M. R.
AU - Fortunato, Elvira
AU - Ferreira, Rute A. S.
AU - de Zea Bermudez, Verónica
N1 - Funding Information:
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00616%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00616%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00686%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00313%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50006%2F2020/PT#
This work was supported by National Funds by FCT—Foundation for Science and Technology and, whenever applicable, by FEDER funds through the POCI—COMPETE 2020—Operational Program Competitiveness and Internationalization in Axis I—Strengthening research, technological development, and innovation SOLPOWINS-PTDC/CTM-REF/4304/2020, OBTAIN-NORTE-01-0145-FEDER-000084, and PTDC/BTM-MAT/30858/2017). This work was also developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011
2020 & UIDP/50011/2020, financed by Portuguese funds through the FCT/MCTES. MA Cardoso acknowledges FCT for Ph.D. and SFH Correia acknowledges SolarFlex (CENTRO-01–0145-FEDER-030186).
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2022/1
Y1 - 2022/1
N2 - The technological potential of poly(methyl methacrylate) (PMMA)-based composite films doped with lanthanide-doped sol–gel derived ionosilicas (IS-Ln) previously proposed for luminescent down-shifting (LDS) and luminescent solar concentrator (LSC) layers connected to photovoltaic (PV) cells is extended here to electrochromic devices (ECDs), targeting the fabrication of single energy harvesting/conversion/management LSC-LDS/PV/ECD systems. These integrated devices have foreseen application in the windows of future zero-energy buildings of smart cities. The proof-of-concept is given with the report of the electro-optical performance of an ECD comprising an optimized electrolyte film composed of PMMA, IS-Nd, and IS-Eu, and the 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid. This amorphous electrolyte is stable below 160 °C, exhibits high ionic conductivity (2.13 × 10−4 and 8.76 × 10−4 S cm−1 at room temperature and 44 °C, respectively), and emits in the visible (red color) and near-infrared (NIR) spectral regions. The device demonstrated fast switching speed (50 s) and high transparency in the visible-to-NIR spectral regions (transmittance (T) = 79/96/89/77% at 555/1000/1500/1650 nm in the as-prepared state, respectively). Upon application of ±2.5 V for 200 cycles, at the same wavelengths, the Tbleached/Tcolored values were 44/28, 46/26, 39/20, and 27/9%, respectively, and the coloration efficiency (CE) values CEin/CEout values were −302/+181, −381/+228, −446/+267 and −734/+440 cm2 C−1, respectively. [Figure not available: see fulltext.].
AB - The technological potential of poly(methyl methacrylate) (PMMA)-based composite films doped with lanthanide-doped sol–gel derived ionosilicas (IS-Ln) previously proposed for luminescent down-shifting (LDS) and luminescent solar concentrator (LSC) layers connected to photovoltaic (PV) cells is extended here to electrochromic devices (ECDs), targeting the fabrication of single energy harvesting/conversion/management LSC-LDS/PV/ECD systems. These integrated devices have foreseen application in the windows of future zero-energy buildings of smart cities. The proof-of-concept is given with the report of the electro-optical performance of an ECD comprising an optimized electrolyte film composed of PMMA, IS-Nd, and IS-Eu, and the 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid. This amorphous electrolyte is stable below 160 °C, exhibits high ionic conductivity (2.13 × 10−4 and 8.76 × 10−4 S cm−1 at room temperature and 44 °C, respectively), and emits in the visible (red color) and near-infrared (NIR) spectral regions. The device demonstrated fast switching speed (50 s) and high transparency in the visible-to-NIR spectral regions (transmittance (T) = 79/96/89/77% at 555/1000/1500/1650 nm in the as-prepared state, respectively). Upon application of ±2.5 V for 200 cycles, at the same wavelengths, the Tbleached/Tcolored values were 44/28, 46/26, 39/20, and 27/9%, respectively, and the coloration efficiency (CE) values CEin/CEout values were −302/+181, −381/+228, −446/+267 and −734/+440 cm2 C−1, respectively. [Figure not available: see fulltext.].
KW - 1-Butyl-3-methylimidazolium hexafluorophosphate
KW - Electrochromic smart windows
KW - Eu and Nd complex anions
KW - Imidazolium-based ionosilicas
KW - Poly(methyl methacrylate)
KW - Sol–gel
UR - http://www.scopus.com/inward/record.url?scp=85114900323&partnerID=8YFLogxK
U2 - 10.1007/s10971-021-05612-z
DO - 10.1007/s10971-021-05612-z
M3 - Article
AN - SCOPUS:85114900323
SN - 0928-0707
VL - 101
SP - 58
EP - 70
JO - Journal Of Sol-Gel Science And Technology
JF - Journal Of Sol-Gel Science And Technology
IS - 1
ER -