Printed Paper Speakers Created by pmTUC Provide Good Sound Quality
Electricity that grows on trees
Besides printed loudspeakers, pmTUC presents innovative application scenarios for printed solar cells. "Half a year ago, we introduced the world’s first 3PV technology--printed paper photovoltaics, says Hübler. At drupa, the Chemnitz researchers exhibit a solar tree with 50 printed solar leaves. Similar to an ordinary tree, the leaves that face the sun collect energy. They are connected with snap fasteners. Via a cable in the hollow tree trunk the solar electricity supplies a battery.
"If you stand below the tree and look up to the shade-giving leaves of the solar tree, you can see that the bottom side of the leaves is printed with advertisements,” explains Hübler and adds with a twinkle in his eye: "That’s even better than in nature.”
Because according to Hübler, the advertising segment is the driving force of the printing industry. "As soon as the customer realises that it is better to not throw advertising that contains a solar cell away, but rather keep it to generate electricity for some time, the printed solar cell will become an unbeatable advertising carrier with a sustainable image,” reports the professor from Chemnitz.
Hübler does not only believe that the 3PV technology, developed at Chemnitz University of Technology, will make a contribution to global power supplies in the future, but also that 3PV will bring about the breakthrough of printed electronics.
In his book "Print Becomes Electronics,” which is published in English and German on occasion of drupa, Hübler analyses the backgrounds of this development and explains the transition that he expects to take place in the traditional graphic arts industry. According to Hübler, electronic media and conventional print media will increasingly merge in the future: "A large part of electronics will be printed, and most print media will be electronic.”