Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Perovskite is a promising light harvester for use in photovoltaic solar cells. In recentyears, the power conversion efficiency of perovskite solar cells has been dramaticallyincreased, making them a competitive source of renewable energy.
This work will discuss several topics related to perovskite based solar cells:
Micron sized grains in planar hole conductor free perovskite based solar cells, In this work we demonstrate the planar configuration on HTM free perovskite based solar cells. The CH3NH3PbI3 perovskite was deposited using the spray technique to achieve micron size perovskite crystals. The number of spray passes changes the CH3NH3PbI3 film thickness; for example, 10 spray passes achieved a film thickness of 3.4 micron of perovskite. Surprisingly, power conversion efficiency of 6.9% was demonstrated for this novel, simple solar cell structure with thick perovskite film that has no HTM. Capacitance-voltage measurements reveal charge accumulation at the CH3NH3PbI3/Au interface while the compact TiO2/CH3NH3PbI3 junction showed aspace charge region, which inhibits the recombination.
In this work we study the kinetics of Cesium lead halide perovskite Nanoparticle (NP) growth; the focusing and de-focusing of the NP size distribution. Cesium lead halide perovskite NPs are considered to be attractive materials for optoelectronic applications. Understanding the kinetics of the formation of these all-inorganic perovskite NPs is critical for reproducibly and reliably generating large amounts of uniformly sized NPs.Here we investigate different growth durations for CsPbI3 and CsPbBr3 NPs, tracking their growth by High-resolution transmission electron microscopy and size distribution analysis. As a result, we are able to provide a detailed model for the kinetics of their growth. It was observed that the CsPbI3 NPs exhibit focusing of the size distribution in the first 20 seconds of growth, following by de-focusing over longer growth durations, while the CsPbBr3 NPs show de-focusing of the size distribution starting from the beginning of the growth. This study provides important knowledge on how to achieve a narrow size distribution of cesium lead halide perovskite NPs when generating large amount of these promising, highly luminescent NPs.
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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.