Photoelectric device including lithium titanate membrane electrode and application thereof

Abstract

The invention provides a photoelectric device including a lithium titanate membrane electrode, which at least comprises a lithium titanate membrane electrode, electrolyte and a counter electrode, wherein a lithium titanate membrane grows on a transparent conductive substrate, and the thickness of the membrane is 1nm-100mum. The lithium titanate membrane comprises a substance with a chemical composition of Li4+xAaTi5-yO12-zBb, wherein A is selected from at least one of H, Na, K, Mg, Ca, Sr, Ba, B, Al, Ga, In, Si, Ge, Sn, Pb, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd,La, Ce, Pr, Nd, Sm, Eu, Gd, Er, Tm, Yb, Lu, W, Pt, Au or Bi; B is selected from at least one of N, P, S, Se, F, Cl, Br or I; x, a, y, z and b represent molar percent; and x is larger than or equal to-4 and smaller than or equal to 4, a is larger than or equal to 0 and smaller than or equal to 4, y is larger than or equal to 0 and smaller than or equal to 4, z is larger than or equal to 0 and smaller than or equal to 3 and b is larger than or equal to 0 and smaller than or equal to 4.

Description

technical field [0001] The invention relates to the field of optoelectronics, in particular to an optoelectronic device containing a lithium titanate thin film electrode. Background technique [0002] Since Plant first proposed the concept of electrochromism in the 1960s, the phenomenon of electrochromism has attracted widespread attention. The light transmittance of electrochromic devices can be adjusted freely in a wide range, and it also has the characteristics of storage and memory, low driving voltage for color change, simple power supply, power saving, and little environmental impact, so it has very broad application prospects. It can be used as a large-area display device for luminous flux adjustment valves such as cameras and lasers, building doors and windows, radios, automotive vehicles, image recording, information processing, optical memory, optical switches, holograms, decorative materials, stealth materials and safety protection materials Wait. The main compo...

AI Technical Summary

Problems solved by technology

[0003] One object of the present invention is to provide a thin film electrode containing lithium titanate, the discoloration mechanism of the lithium titanate material is the energy band change caused by lithium intercalation, and the unit cell parameters of the material do not change after lithium intercalation, which is "zero" Strain" material, and lithium ions can be intercalated and extracted from three-dimensional directions, with high ion conductivity and diffusion coefficient, which can overcome the shortcomings of existing inorganic color-changing films with slow color-changing response speed; organic color-changing films have poor chemical stability and poor adhesion to the substrate. , so as to provide a thin-film electrode with good cycle reversibility, long life, and high discoloration response speed

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