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The November issue of physica status solidi (rapid research letters) features a back cover article by an HPMI research team.
“A high efficiency 3D photovoltaic microwire with carbon nanotubes (CNT)–quantum dot (QD) hybrid interface” was written by Dr. M. J. Uddin, Deborah E. Daramola, Ever Velasquez, Dr. Tarik J. Dickens, Jin Yan, Emily Hammel, Federico Cesano, and Dr. Okenwa I. Okoli.
The article discusses an innovative hybrid quantum-dot sensitized photo¬voltaic carbon-nanotubes microyarn developed by the HPMI team using thermally stable and highly conductive carbon-nanotube yarns (CNYs). These three-dimensional photovoltaic cells show 5.93% photon-to-energy conversion efficiencies under standard AM 1.5 light intensity with high structural flexibility. The CNYs are highly inter-aligned, ultrastrong and flexible with excellent electrical conductivity, mechanical integrity and catalytic properties. The CNYs are coated with a quantum-dots (CdSe/CdS) incorporated TiO2 microfilm and intertwined with a second set of CNYs as the counter electrode. These cells are capable of efficiently harvesting incident photons regardless of direction and generating photocurrents with high efficiency and operational stability. This flexible 3D PV wire could potentially be woven into engineering textiles or reinforced fabrics for smart applications.
The article can be found at http://onlinelibrary.wiley.com/doi/10.1002/pssr.v8.11/issuetoc .