I am building an experimental thermopile, and I'm getting confused with the definitions for the Seebeck effect and Pettier effects.
The Seebeck effect:
The Seebeck effect is the conversion of heat directly into electricity at the junction of different types of wire. It is named after the Baltic German physicist Thomas Johann Seebeck, who in 1821 discovered that a compass needle would be deflected by a closed loop formed by two different metals joined in two places, with a temperature difference between the joints.
The Peltier effect:
The Peltier effect is the presence of heating or cooling at an electrified junction of two different conductors and is named after French physicist Jean Charles Athanase Peltier, who discovered it in 1834. When a current is made to flow through a junction between two conductors, A and B, heat may be generated or removed at the junction.
The Peltier effect has been shown to be 'reversible' - in the sense that if the temperature of one side of a Peltier element is elevated with respect to the other side, a current is generated.
Is the Peltier effect the dual of the Seebeck effect?
Also, for the purpose of producing voltage and current from thermal energy, is it better to use the Seebeck effect or the Peltier effect - if one is "better" than the other (i.e. produces more voltage and current for a given temperature differential), what is the scientific reason for that?