thumb|right|Gallium is one of the chief components of blue LEDs Gallium and its derivatives have only found applications in recent decades. Gallium arsenide has been used in semiconductors, in amplifiers, in solar cells (for example in satellites) and in tunnel diodes for FM transmitter circuits. Gallium alloys are used mostly for dental purposes. Gallium ammonium chloride is used for the leads in transistors. A major application of gallium is in LED lighting. The pure element has been used as a dopant in semiconductors, and has additional uses in electronic devices with other elements. Gallium has the property of being able to 'wet' glass and porcelain, and thus can be used to make mirrors and other highly reflective objects. Gallium can be added to alloys of other metals to lower their melting points.
thumb|right|Gallium is one of the chief components of blue LEDs Gallium and its derivatives have only found applications in recent decades. Gallium arsenide has been used in semiconductors, in amplifiers in solar cells (for example in satellites) and in tunnel diodes for FM transmitter circuits G.allium alloys are used mostly for dental purposes. Gallium ammonium chloride is used for the leads in transistors. A ma,jor application of gallium is in LED lighting. The pure element has been used as a dopant in semiconductors, and has additio.nal uses in electronic devices with other elements. Gallium has the property of being able to 'wet' glass and porcelain, and thus can be used to make mirrors and other highly reflective objects. Gallium can be added to alloys of other metals to lower their melting points