All inorganic thin film electrochromic device using LiPON as the ion conductor

Simplified All‐Solid‐State WO3 Based Electrochromic Devices on Single Substrate: Toward Large Area, Low Voltage, High Contrast, and Fast Switching Dynamics

“…These can be distinguished into two main methodological approaches. [11,12,[24][25][26][27] Moreover, it offers advantages in terms of reduced costs, waste of raw materials, and speed of manufacturing, representing thus a very promising strategy for industrial exploitation. [19][20][21][22] In this case, the device is based on a standard "sandwich-type" configuration in which the gel electrolyte is interposed between two electrode substrates, and then treated by an extra UV curing or thermal process.…”

“…On the one hand the fabrication of gel EC films by blending the electrolyte and the EC materials in one "single layer." With regard to all inorganic thin film ECDs, the most effective one is based on lithium phosphorus oxynitride electrolyte showing an optical modulation of 40% with a switching time of 30 s. [24,25] However, although inorganic solid electrolytes have superior ion conductivity and ion transference numbers if compared to SPEs, their practical operation is still constrained from their defects, such as large grain boundary resistance, low interface compatibility between electrolyte and electrode, with a large energy barrier for ion electrolyte migration in electrode interface. Noteworthy, Sotzing's group proposed a single chromogenic electrolyte film by photo polymerization of a polymer electrolyte solution and electrochemical polymerization of an EC monomer within the assembled device.…”

The approach of in-situ doping ion conductor fabricated with the cathodic arc plasma for all-solid-state electrochromic devices

“…These values are similar to the ion conductivity of the conventional Li ion solid state electrolyte and also suitable for ECD application. 15 Furthermore, the fast switching time of the ECD with the in-situ doping CVAP technique has been also observed, as shown in Fig. 3.…”

“…13,14 Furthermore, up to now very few examples of EC devices fabricated on a single substrate have been reported in literature. [10][11][12][13][14][15][16][17][18] 16,17 In particular, the properties of the solid-state ion conductor layer, such as Ta 2 O 5 films significantly affect the optical switching properties of the device, such as the switching speed, transparency, and durability. 18 On the hand, the process stability is also a key for mass production.…”

Checkerboard deposition of lithium manganese oxide spinel (LiMn2O4) by RF magnetron sputtering on a stainless steel in all-solid-state thin film battery

“…According to related study for all-solid-state TFLBs that have significant advantages in high safety, long term storage and high cycle ability than that of the liquid electrolytes in batteries [2][3][4][5][6]. Among these solid electrolytes, lithium phosphorus oxynitride (LiPON) is the most popular and stable in allsolid-state TFLBs [7][8][9]. However, solid electrolyte has not been widely used in TFLB because of its ionic conductivity is too low to meet the required capacity at high power density.…”