Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics 2018 (AP-HOPV18)
Publication date: 27th October 2017
Hybrid organic-inorganic perovskite solar cells exhibit high power conversion efficiency due to long charge carrier diffusion, high absorption coefficient and direct bandgap tunability. Inverted p-i-n PSCs exhibit better stability and small current density-voltage(J-V) hysteresis compared to conventional n-i-p structure. Fullerene-based phenyl-C61-butyric acid methyl ester (PCBM) is widely used as electron transporting materials (ETM) for inverted perovskite solar cells. In this study, we use naphthalene diimide (NDI) small molecules as ETMs to replace conventional PCBM ETM. [1] In NDI derivatives, electron-deficient naphthalene diimide core exhibit formation of strong π-π intermolecular interactions. NDI derivatives are readily synthesized and tunable of N-substituted side groups using an one-step condensation reaction. The side groups of NDI derivatives strongly influence on the molecular orientation, semiconducting properties and device performance. We investigate performance of inverted perovskite solar cells with introducing NDI small molecules with N-substituted aromatic side groups (NDI-A) as ETMs. The FAPbI3-xBrx devices with NDI-A based ETMs exhibit high power conversion efficiency of over 19%, which has comparable with PCBM based ETMs. To explore the thermal stability of ETMs, differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) are used. We analyze the intermolecular interaction of NDI-based ETMs by Hirshfeld surface analysis and their void structures.
Reference
[1] J. H. Heo, S. C. Lee, S. K. Jung, O. P. kwon, S. H. lm, J. Mater. Chem. A, 2017, 5, 20615.
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.