Publication date: 23rd October 2020
Perovskite solar cells (PSCs) represent a promising emerging technology for solar energy harvesting.1 PSCs have such main advantages as solution processibility, excellent scalability using roll-to-roll printing and coating technologies and hence potential for ultralow cost. Currently, efficient laboratory PSC architectures typically use thermally evaporated top metal contacts. However, the thermal evaporation method is energy and time consuming and technologically less promising. In this regard, the development of vacuum-free and low-cost techniques for the top electrode deposition is essential for the future commercialization of the perovskite PV technology.
Herein, we present a simple method of electrode deposition in p-i-n PSCs using low melting point alloys. We proposed to use top electrodes based on Wood`s metal, which is an alloy with the melting point of 72°C. Using contact angle measurements of the liquid metal droplets deposited on standard charge-transport layers, we found that phenyl-C61-butyric acid methyl ester (PCBM) has the best adhesion to metal. This finding suggested that p-i-n device architecture such as ITO/PTAA/Cs0.12FA0.88PbI3/PCBM/metal electrode can be used for testing our hypothesis.
As a proof of concept, we used a simple lamination of Wood’s metal foils on top of the ITO/PTAA/Cs0.12FA0.88PbI3/PCBM stack. After some optimization of the processing parameters, the champion devices with laminated metal electrodes delivered power conversion efficiencies up to 15%, which is comparable with the characteristics of the conventional device architecture using evaporated Mg/Ag top electrodes (Figure 1). Our facile lamination process enables a simple and technologically relevant SC fabrication process without using vacuum-based or high temperature material deposition stages. Furthermore, it is compatible with modern printing techniques and, therefore, is promising for large-area applications leading to significantly reduced cost of the final product.
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.