Observatorio de I+D+i UPM

Memorias de investigación
Research Project:
PINC: Towards p-type conductivity in In0.5Ga0.5N nanocolumns on a Si (100) substrate with GaN buffer layers
Research Areas

We propose a 24-months-project, working on the growth and characterization of Mg doped InxGa1-xN Nanocolumns (NCs) on a Si (100) substrate with a GaN buffer layer, aiming to achieve the p-type conductivity in In0.5Ga0.5N NCs. In the previous study, selective area growth (SAG) of In(Ga)N NCs on top of a GaN buffered Si substrate by using plasma-assisted molecular beam epitaxy (PAMBE) has been achieved. Subsequently, the major challenges for fabricating p-In0.5Ga0.5N/n-In0.5Ga0.5N/p-Si/n-Si stacking solar cells deal with the achievement of controllable p-type conductivity in In0.5Ga0.5N NCs and its reliable assessment. Ordered Mg-doped InxGa1-xN NCs will be grown on a Si (100) substrate with a GaN buffer layer by using PAMBE. The growth will start with Mg-doped In0.3Ga0.7N/GaN NCs. Then Indium mole fraction in subsequent samples will be increased gradually, approaching 0.5. During the process, different characterization measurements will be performed in order to optimize the growth conditions.The proposed project will provide high quality p-type InxGa1-xN, 0.3≤x≤0.5, NCs on a Si (100) substrate with a GaN buffer layer for further processing. The electronic and structural properties of Mg-doped InxGa1-xN, 0.3≤x≤0.5, can be abstracted from the characterization results in the project. The information will fill the research gap in the Mg-doped InxGa1-xN, 0.3≤x≤0.5.

Project type
Proyectos y convenios en convocatorias públicas competitivas
Entity Nationality
Sin nacionalidad
Entity size
Granting date
  • Director: Enrique Calleja Pardo (UPM)
  • Participante: Mengyao Xie (UPM)
Research Group, Departaments and Institutes related
  • Creador: No seleccionado
  • Grupo de Investigación: Grupo de Dispositivos Semiconductores del ISOM
  • Departamento: Ingeniería Electrónica
  • Centro o Instituto I+D+i: Instituto Universitario de Sistemas Optoelectrónicos y Microtecnología
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)