Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV24)
Publication date: 6th February 2024
Device stability is now one of the main challenges that we face in lead-tin perovskite solar cell production. Device stability has been linked to the interactions between the perovskite and the interfaces in the device [1,2]. What occurs at the interfaces between the perovskite and its transport layers is not yet fully understood.
This project focuses on the study of the perovskite-Electron Transport Layer (ETL)-metal contact interfaces in lead-tin perovskite (Cs0.15FA0.85Pb0.5Sn0.5I3) solar cells to examine the contribution of the interfaces to the degradation of the perovskite solar cells. We fabricated and compared full device stacks to stacks without metal contacts, and without an ETL (see graphical abstract), with half of each batch of samples are stored in the clean nitrogen environment of the glovebox, and the other half in sample boxes outside of the glovebox (exposed to the atmosphere of the lab).
We examine the evolution of the device performance and their optical, structural, and morphological properties as they degrade over the course of timespans from 7 to 28 days. We compare these changes to gain insight on the potential different mechanisms of degradation introduced with each layer added to a solar cell device.
When we examine the SEM images we see clear morphological differences over time in the presence of the ETL, indicating the existence of some interaction between the perovskite and the electron-transport layer (C60 and BCP). To further examine this interaction, we varied the electron-transport layer (with PCBM) and the passivation layer to further estimate the contribution of the type of electron-transport layer on device performance and stability.
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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.