Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Photoluminescence (PL) of perovskite thin-films is not as straightforward as initially thought highlighting the sometimes-surprising nature of these materials, here we attempt to unravel the PL data and discuss what this can actually tell us about these materials. We report the characteristics of a series of perovskites with various halide combinations studied via fluorescence spectroscopy and fluorescence microscopy (FM) coupled with an optical fibre spectrometer. This provides information on the bulk and local photoluminescence (PL) and allows us to map the surface of the films and monitor the evolution of photoluminescence with time exposed to various controlled environments. We have followed the evolution of PL upon crystallisation and subsequent degradation of perovskite films. Here we attempt to correlate the PL, crystal size, structure and coverage with overall PV device efficiency and stability. We have studied the effect of annealing temperature and rate of heating on the crystallisation and PL, including the effect of plasmonic1 and near-infrared2 heating that we have previously shown to complete the crystallisation of perovskites in extremely short timescales (ms and s respectively). As expected the heating profile has a large effect on the crystal structure and stability of the crystallised film. We have also expanded the set up to look at the PL under varying light bias to shed light on the efficiency of electron selective and hole selective layers. This is potentially a fast and straight forward screening method that does not need the manufacture of a complete device to evaluate and optimise the device stack.
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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.