A solar cell is a solid state device that converts the energy of sunlight directly into electricity by the photovoltaic effect. Materials presently used for photovoltaic solar cells include monocrystalline silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, and copper indium selenide/sulfide. Many currently available solar cells are made from bulk material that are cut into wafers between 180 to 240 micrometers thick that are then processed like other semiconductors. Other materials are made as thin-films layers, organic dyes, and organic polymers that are deposited on supporting substrates. This last category typically can be easily processed at a low cost in roll-to-roll screen printing and coating equipment. Solar1
Radio-frequency identification (RFID) is a technology that uses communication via electromagnetic waves to exchange data between a terminal and an object such as a product, animal, or person for the purpose of identification and tracking. Some tags can be read from several meters away and beyond the line of sight of the reader. Radio-frequency identification involves interrogators (also known as readers), and tags (also known as labels). Most RFID tags contain at least two parts. One is an integrated circuit for storing and processing information(that now can be made by printed electronics for simple applications), modulating and demodulating a radio-frequency (RF) signal, and other specialized functions. The other is an antenna for receiving and transmitting the signal, typically based on an etched metal sheet form or nowadays also at a lower cost manufactured by screen printing . RFID
An organic light emitting diode (OLED) is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compounds which emit light in response to an electric current. This layer of organic semiconductor material is situated between two electrodes. Generally, at least one of these electrodes is transparent. OLEDs are used in television screens, computer monitors, small, portable system screens such as mobile phones and PDAs, watches, advertising, information and indication. OLEDs are also used in light sources for general space illumination and in large-area light-emitting elements OLEDs
A battery is a device that converts chemical energy directly to electrical energy. It consists of a number of voltaic cells; each voltaic cell consists of two half cells connected in series by a conductive electrolyte containing anions and cations. New batteries have recently been developed that consist of flexible foils with printed anodes, cathodes or electrolytes. Batteries
Multilayer ceramics is one of the technology areas of Haikutech. The Keko Equipment machines are well suited for all the steps in the printing, coating and laminating processes to make multilayered ceramic objects. One example is the newly emerging area of Solid Oxide Fuel Cells. These devices convert chemical energy into electrical and thermal energy, combining oxygen and hydrogen. They operate at high temperatures (600...1000°C). Single SOFC cells consist of three main components: two porous electrode layers separated by a dense, oxygen-conducting electrolyte layer (the structure thickness is less than 1 mm). The cathode receives oxygen (usually from hot air), and the anode receives hydrogen, often derived from a fuel. The oxygen ions, created by surface reactions in the cathode, migrate from the cathode to the anode through the electrolyte and combine with hydrogen resulting in a current flow through an external load. The most common electrolyte material is Yttria Stabilized Zirconia (YSZ); the cathode is generally made up of porous perovskite-structured ceramics. The currently preferred SOFC anode material is a porous Ni-YSZ cermet. tape casting of the anode and cathode layers. More information can be found on Ceramics