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Nome do grupo

Semiconductors Physics

Localização

Campus Universitário de Santiago

3810 - 193 Aveiro

Instituto

Universidade de Aveiro / I3N

Membros

António Cunha; Joaquim Leitão; Paulo Fernandes; Marta Sousa; Jennifer Teixeira

Endereço do site

http://www.i3n.org/Page.aspx?pt=4

Pessoa de Contacto (responsável)

António Cunha - This email address is being protected from spambots. You need JavaScript enabled to view it.

Áreas de interesse

Semiconductor Physics; Growth and characterization of thin films for photovoltaic applications.

Pequena descrição de actividades

Study of structural, optical and electrical properties of bulk, thin films and low dimensional structures for photovoltaic applications. The materials under investigation are IV-IV or III-V semiconductors, and chalcogenide and kesterites alloys (Cu2ZnSn(S,Se)4, Cu(In,Ga)Se2, SnSe, SnSe2,...). Investigation of fundamental properties of point defects (transition metals, rare earth,...) in bulk semiconductors and low dimensional structures.

Chalcopyrite and related thin film semiconductors for PV applications. The group is able to prepare full operating thin film solar cells based on CuIn1-xGaxSe2 (CIGS) with efficiencies approaching 10%. In this context the group grows and characterizes all the layers needed: Mo/CIGS/CdS/i-ZnO/ZnO:Al or ITO. For the growth of the CIGS layer the group has developed a unique method combining evaporation with RF-magnetron sputtering;

  • The development of Cu2ZnSn(S1-xSex)4 (CZTS) as In free absorbers for thin film solar cells;
  • The development of Dye Sensitised Solar Cells (DSSCs) with efficiencies 9.6%;
  • The development of mini-modules based on DSSCs;
  • The development of Third Generation solar cells like hybrid bulk heterojunction solar cells based on ZnO, TiO2 nanostructures, carbon nanotubes and P3HT;
  • New materials and new concepts for solar cells:
  • New absorbers for thin film solar cells (ex: SnS, CTS, etc.);
  • New dyes for DSSCs in collaboration with LNEG and the Chemistry department, University of Aveiro;
  • DSSCs with carbon nanotube forests and ZnO tetrapods.

 

Apresentação no PV@PT2