Functionalization of Nanomaterials for Photovoltaic Devices
University of Arkansas/NASA Ames Research Center, Space Technology Mission Directorate
The project supported by NASA-EPSCoR was focused on establishing methods to enhance the performance of the photovoltaic devices fabricated from nanocrystals, such as CuInSe2, FeS2, InP/ ZnS core shells and InAs quantum dots embedded into GaAs p-n junction. The properties of the devices investigated here are the power conversion efficiency, which is extracted from the I-V characteristics, the external quantum efficiency, and spectral response. The methods used to enhance the device performance are based on the plasmonic effect and antireflection coating layers. The study of plasmonic effect was performed by coupling the devices to gold nanoparticles and gold optical nanoantennas. The antireflection coating layers were nanomaterials grown by sol-gel techniques. These sol-gel grown materials including ZnO nanorods, Ta2O3, MgF, AZO thin films were used as single and bilayers antireflection coatings. The combination of both the plasmonic affect and antireflection coating were found to increase the power conversion efficiency, quantum efficiency, and the spectral response by at least 50%. Several technical papers were resulted from this funding.
Omar Manasreh, Science PI, University of Arkansas, Fayetteville
Meyya Meyyappan, NASA Technical Monitor, Ames Research Center
An LED powered by InAs quantum dots solar cells fabricated in the PI-Lab.
NASA EPSCoR Stimuli 2014-15
Published on Dec 14, 2015
NASA Office of Education’s Aerospace Research & Career Development (ARCD) is pleased to release NASA EPSCoR Stimuli, a collection of univers...