Publication date: 1st April 2013
Inorganic semiconducting quantum dots (QDs) are a promising class of materials in the field of solution-processable photovoltaics. They possess high absorption coefficients and high mobility compared to organic materials, and exhibit highly tunable optical properties which can be well controlled by varying the crystal size. This makes them prime candidates for use in various device structures including tandem cells, where using materials with complementary absorption ranges is critical to achieving full spectral coverage and current matching between the tandem subcells.
PbS QDs have been reported to yield highly efficient solar cells[1] and recently we have achieved exceptional power conversion efficiencies of 5.2% in Schottky devices. Using this highly efficient material in more sophisticated device structures and in combination with other well established high-performance materials should therefore yield even higher efficiencies. We have reported parallel tandem structures featuring efficiencies as high as 2.9%, harvesting across the entire visible spectrum and in the infrared as far as 1.2 µm.[2]
Solution-processable hybrid inorganic-organic structures such as these are still a very much unexplored, yet promising class of solar cells. In this work we will present our progress in the fabrication of tandem solar cells featuring PbS quantum dots in combination with polymer-fullerene blends, focusing mainly on our latest efforts in developing efficient interlayers for use in serially connected hybrid tandem solar cells
[1] Szendrei, K.; Gomulya, W.; Yarema, M.; Heiss, W.; Loi, M. A., PbS nanocrystal solar cells with high efficiency and fill factor, Appl. Phys. Lett. 97, 203501 (2010); [2] Piliego, C.; Manca, M.; Kroon, R.; Yarema, M.; Szendrei, K.;Andersson, M.R.; Heiss, W.; Loi, M.A. Charge separation dynamics in a narrow band gap polymer–PbS nanocrystal blend for efficient hybrid solar cells, J. Mater. Chem., 2012,22, 24411-24416
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.