Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
DOI: https://doi.org/10.29363/nanoge.hopv.2023.149
Publication date: 30th March 2023
Over the past decade, hybrid halide perovskites have emerged as highly promising semiconducting materials for thin-film photovoltaics. Yet, continuing fundamental research is required to understand properties of these materials to unlock their full potential and to achieve durable perovskite photovoltaics. In this regard, employing of microscopy techniques is a promising approach to study fundamental properties of hybrid perovskites [1]. Microscopy techniques enable direct visualization of mesoscale disorder of hybrid perovskites that impacts the macroscale properties of these materials [2]. Among variety of microscopy techniques, photoemission electron microscopy (PEEM) is a powerful technique that provides valuable insights into the properties of hybrid perovskites on micro- and nanoscale. By employing PEEM, we have successfully imaged nanoscale surface defects in spin-coated perovskite films and demonstrated their roles in trapping of photoexcited holes [3]. We further uncovered the varied nature of these defects [4] and understood their roles in photo-degradation of hybrid halide perovskites [5].
In this talk, I will discuss in detail the principles of PEEM and will explain how this technique can be applied to study hybrid perovskites. I will introduce requirements for PEEM experiments, variety of possible measurements and will highlight considerations for imaging of surface defects of perovskite thin films. I will next discuss how to add time resolution to PEEM measurements and how to employ time-resolved PEEM (TR-PEEM) to study charge trapping dynamics of hybrid perovskites in space and time.
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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.
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