title: Thermoelectrics: Basic Principles and New Materials Developments
author:  G.S. Nolas 
description: <P>From the reviews of the first edition:</P> <P></P> <P>"Beginning around 1990 concerns regarding refrigerant fluids and interest in cooling electronics led to renewed activity in the science and technology of alternative refrigeration. Thermoelectric cooling mechanisms, thermomagnetic effects and thermionic emission including the fundamentals of the implementation of these basic mechanisms comprise the books subject.  Therefore the book can serve as a reference to experimentalists  ." (Vladimir Sldek, Zentralblatt MATH, Vol. 999, 2002)</P>
zlib_text:  
  Materials 2020, 13, 1404; doi:10.3390/ma13061404 
  www.mdpi.com/journal/materials 
  Article 
  The Molecular Weight Dependence of 
  Thermoelectric Properties of Poly (3-Hexylthiophene) 
  Saeed Mardi 1, Marialilia Pea 2, Andrea Notargiacomo 2, Narges Yaghoobi Nia 1, Aldo Di Carlo 1 
  and Andrea Reale 1,* 
  1 Department of Electronic Engineering, CHOSE—Centre for Hybrid and Organic Solar Energy, University 
  of Rome Tor Vergata, via del Politecnico 1, 00133, Rome, Italy; saeed.mardi@gmail.com (S.M.); 
  narges.yaghoobi.nia@uniroma2.it (N.Y.N.); aldo.dicarlo@uniroma2.it (A.D.C.) 
  2 Institute for Photonics and Nanotechnologies, CNR, 00156, Rome, Italy; marialilia.pea@ifn.cnr.it (M.P.); 
  andrea.notargiacomo@ifn.cnr.it (A.N.) 
  * Correspondence: reale@uniroma2.it 
  Received: 16 February 2020; Accepted: 16 March 2020; Published: 19 March 2020 
  Abstract: Organic materials have been found to be promising candidates for low-temperature 
  thermoelectric applications. In particular, poly (3-hexylthiophene) (P