Switchable mirror based on Mg–Zr–H thin films

Bao, Shanhu; Yamada, Yuya; Tajima, Kazuki; Jin, Ping; Okada, Masahisa; Yoshimura, Kazuyoshi

doi:10.1016/j.jallcom.2011.10.098

Cited by 14 publications

(6 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1(b)) (e.g. transition element and rare earth-based alloys (Griessen et al 1997) and Mg-based alloys (Bao et al 2012;Granqvist 2014), in conjunction with a thin catalytic layer of Pd or Pt. When exposed to diluted hydrogen, the metal oxide GC materials change from a transparent state to an absorbing colored state, while metal hydride type GC transforms from a reflective state to a transparent state, hence it has also been named a "switchable mirror".…”

Section: Introductionmentioning

confidence: 99%

“…The degradation results from the combined effect of the damage to the protective Pd layer, and Mg migration to the surface to form oxides that blocks the diffusion of hydrogen (Yoshimura et al 2007(Yoshimura et al , 2010. Most Mg-based alloy hydride, for example Mg-Ni (Yoshimura et al 2007), Mg-Ti (Tajima et al 2008), Mg-Gd (Janner et al 2001), and Mg-Zr (Bao et al 2012), GC thin films have a typical life of 100 to 1000 cycles. Inserting a buffer layer between the alloy and Pd layer (Bao et al 2006) or coating a polymer protective layer could improve the durability to 450 and 1000 cycles (Bao et al 2008), respectively.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of Mg-Y coated gasochromic smart windows for building applications

et al. 2018

View full text Add to dashboard Cite

In the purpose of improving indoor comfort and achieving building energy conservation, significant efforts have been made to improve the performance of window systems. Smart windows have been increasingly considered as an efficient technology with adjustable control of their thermal and/or optical properties in response to instant changes of the environment. This paper explores the potential of using a durable Mg-Y based switchable mirror gasochromic (GC) material for building window applications. The selected Mg-Y based GC window provides a degree of flexibility to reflect the undesirable incident solar radiation rather than the other types of GC windows, which absorb the solar heat that might eventually go into the indoor space through convective, conductive and radiative heat transfer. Building simulations were carried out for a typical office with Mg-Y GC window applied using EnergyPlus. The characterization of the selected gasochromic smart window and its impact on building performance was comprehensively studied under 5 diverse climates in China. In addition, various control strategies in response to different environmental conditions or indoor comfort criteria are also considered. The results indicated that Mg-Y based films with excessively low transmittance at the reflective state are not beneficial from the perspective of building energy conservation, while potentially developed Mg-Y windows with relative higher transmittance and larger transmittance modulation can yield energy conservation of up to 27% when compared with standard double glazing. Overall, the work presented in this paper may be seen as offering potential advice and guidance on further development of switchable mirror GC material that seek to be applied into building windows for amplifying improvements in energy efficiency and occupant comfort.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of Mg-Y coated gasochromic smart windows for building applications

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Magnesium‐based alloy thin film switchable mirrors are known to be good reflection‐type gasochromic materials, which achieves more than 60% reflection in the 250–2500 nm wavelength range. Thicker alloy films displayed higher reflectivity.…”

Section: Resultsmentioning

confidence: 99%

Wide‐Band Reflection‐Type, All‐Solid‐State Switchable Mirror Composed of WO₃–Mg₄Ni Thin Films and Proton‐Conductive Polymer Electrolytes

Bao

Zhang

et al. 2018

ChemistrySelect

Self Cite

View full text Add to dashboard Cite

In all‐solid‐state devices based on WO3–NiO thin films, solid electrolytes such as Ta2O5 or Nb2O5 are usually used as the ion conducting layers. However, the thickness of the proton conducting layer of Ta2O5 or Nb2O5 is thicker, and the sputtering rate is low, which affects the cost and practical application of the devices. In this paper, a wide‐band reflection‐type all‐solid‐state WO3–Mg4Ni thin film switchable mirror was fabricated by using an assemble process and a proton‐conductive Nafion membrane was used as a solid electrolyte for the first time. WO3 is an ideal discoloration material in all‐solid‐state electrochromic devices, whereas Pd/Mg4Ni is a reflective switching material. WO3 and Pd/Mg4Ni thin films were deposited on ITO‐coated glass and glass substrates, respectively, by DC magnetron sputtering. The device was assembled by two separated thin films using a poly vinyl butyral (PVB) glue containing a proton‐conductive Nafion as the electrolyte. The fabricated all‐solid‐state mirror could be reversibly switched between the mirror and transparent state by applying different voltages. The influences of the Nafion concentration and applied power on the switching properties were investigated.

show abstract

“…A colorimetric sensor is based on tuning of resonances to the visible region of the spectrum to achieve visible structure coloring and sensing functions. 16,17 It has a simple structure, easy fabrication, and low cost, but sensing by contrasting color changes also leads to an inherently low resolution for hydrogen sensing. Reflectance spectral contrast is usually designed for perfect absorbers, and sensing of the target is achieved by monitoring changes in the magnitude or position of the reflectance valley.…”

Section: Introductionmentioning

confidence: 99%

A dual-band hydrogen sensor based on Tamm plasmon polaritons

Zhang

Chen

et al. 2023

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

Switchable mirror based on Mg–Zr–H thin films

Cited by 14 publications

References 18 publications

Investigation of Mg-Y coated gasochromic smart windows for building applications

Investigation of Mg-Y coated gasochromic smart windows for building applications

Wide‐Band Reflection‐Type, All‐Solid‐State Switchable Mirror Composed of WO₃–Mg₄Ni Thin Films and Proton‐Conductive Polymer Electrolytes

A dual-band hydrogen sensor based on Tamm plasmon polaritons

Contact Info

Product

Resources

About

Switchable mirror based on Mg–Zr–H thin films

Cited by 14 publications

References 18 publications

Investigation of Mg-Y coated gasochromic smart windows for building applications

Investigation of Mg-Y coated gasochromic smart windows for building applications

Wide‐Band Reflection‐Type, All‐Solid‐State Switchable Mirror Composed of WO3–Mg4Ni Thin Films and Proton‐Conductive Polymer Electrolytes

A dual-band hydrogen sensor based on Tamm plasmon polaritons

Contact Info

Product

Resources

About

Wide‐Band Reflection‐Type, All‐Solid‐State Switchable Mirror Composed of WO₃–Mg₄Ni Thin Films and Proton‐Conductive Polymer Electrolytes