Understand 3G technology

What is 3G ?___________________________________________________________________________________3G (or 3-G ) is short for third-generation technology . It is used in the context of mobile phone standards. The services associated with 3G provide the ability to transfer simultaneously both voice data (a telephone call) and non-voice data (such as downloading information , exchanging email , and instant messaging ).3G or 3rd generation mobile telecommunications is...

Read More

Transparent Conductors

Transparent conducting oxides (TCOs) are ubiquitous and are found in a wide range of devices including flat panel displays, touch-sensitive screens, and solar cells. For instance, indium tin oxide (ITO) is one of the most widely used TCOs because it combines a very low resistivity (1x10-4 ohm cm) with a high transparency of 80-90% for visible light. In most conventional...

Read More

Next-Generation Photovoltaic Technologies

A new understanding of organic semiconductor junctionsThe foundation of almost all conventional inorganic semiconductor devices is the p-njunction, defined by the interface between an electron rich (n-type) and an electron poor (p-type) semiconductor.  First developed in 1949, the Shockley ideal diode equation comprehensively describes the current-voltage characteristics...

Read More