Electrochromic devices, which allow the transmittance of light to be adjusted by applying a voltage, sound like a strong competitor to liquid crystal displays. Yet despite their proposed advantages of low cost and mechanical flexibility, fragile materials and material mismatches with the electrodes have so far hindered the performance of these newcomers in display technology. Now an all-graphene electrochromic device has demonstrated 55% modulation, as well as a broad spectral response, making it a clear candidate for smart windows and displays…..
http://nanotechweb.org/cws/article/tech/58957
