**6. Conclusions**

The chapter presented a general vision on the nowadays green electronics products and technologies. The topic includes but not limited to low voltage circuits and low size devices, recycling electronic, bio-nanotechnologies, electronic reconversion, solar cells, supra-capacitors, new solution of energy generation, coupled to almost zero electronic power consumption. Fortunately, the microelectronic technology evolves to nanotechnology that means lower sizes and by default the energy consumption decreases.

Among representatives, few promising candidates were touched: the SOI, NOI and SON transistors, the tunnel-FETs and vacuum nanotransistors. The targeted nanostructured materials for Organic Thin Film Transistors are green polymers attached to nanocomposite. From the green industry point of view, these OTFTs are associated with a room temperature technology, in absence of any expensive clean room.
