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Copper oxide nanoparticles for thin film photovoltaics

  • Maurice Nuys (a1), Jan Flohre (a1), Christine Leidinger (a1), Florian Köhler (a1) and Reinhard Carius (a1)...


Commercially available tenorite (CuO) nanoparticles (NPs) were investigated in particular with respect to their suitability for photovoltaic applications. NPs with a diameter of about 30 nm were step wise annealed up to 1000°C in nitrogen atmosphere. The influence of the annealing treatment on the structural and electronic properties was investigated by Raman, photoluminescence (PL) and photothermal deflection spectroscopy (PDS) as well as X-ray diffraction measurements. Size, shape, and phase of the untreated NPs are analyzed by TEM measurements. The PL and PDS results show a strong increase of the tenorite band edge emission at about 1.3 eV accompanied by a decreasing sub gap absorption with increasing annealing temperature up to 700°C. According to literature, a phase transition from tenorite to cuprite (Cu2O) was expected and observed after annealing at 800°C. Strong cuprite band edge emission at about 2 eV accompanied by very weak defect and possibly tenorite band edge emission was found for samples annealed at 800°C and 1000°C.



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Copper oxide nanoparticles for thin film photovoltaics

  • Maurice Nuys (a1), Jan Flohre (a1), Christine Leidinger (a1), Florian Köhler (a1) and Reinhard Carius (a1)...


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