Electrochromic device having a dopant therein to improve its col

Details Electrochromic device having a dopant therein to improve its col Electrochromic device having a dopant therein to improve its col

1975-07-11

1977-03-01

Nelms, David C.

G02B 523

Patent

active

040099350

ABSTRACT:
An electrochromic device includes a layer of electrochromic material, such as tungsten oxide. The electrochromic material includes a dopant, such as molybdenum oxide. A sufficient amount of the dopant, for example, 2% by atomic weight, functions to shift the natural color center absorption peak of the electrochromic layer. Due to the shift of the color center absorption peak, coloration of the layer of electrochromic material exhibits an improved match to the spectral sensitivity of the human eye. Consequently, less electrical energy is required to operate the device at satisfactory viewing levels as compared to conventional devices where the color center absorption peak is less closely matched to the spectral sensitivity of the human eye.

REFERENCES:
patent: 3451741 (1969-06-01), Manos
patent: 3521941 (1970-07-01), Deb et al.
patent: 3560078 (1971-02-01), McIntyre et al.

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