Semiconductor coolers are a form of solid state cooling that incorporates both semiconductor technologies and electronic assembly techniques. One such example is the Thermoelectric Peltier Refrigeration Cooling System DIY Kit.
The DIY kit is a semiconductor cooling kit which uses a TEC1-12706 Thermoelectric Cooler 6A Peltier Module. The kit has 2 heat sinks: the bigger one is for the hotter side and the smaller one is for the cooler side. The bigger the heat sink, the greater dissipation of the heat.
The fan, also included in this kit acts as a radiator. This is attached to the bigger heat sink. The TEC1-12706 thermoelectric Peltier module is sandwiched between the two heat sinks. The module will reduce the temperature.