Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
Organic hole transport material (HTM) is one of the important components in perovskite solar cell (PSC) to improve the device performance and device stability. Most of the reported HTMs require p-type dopants, such as LiTFSI to improve the conductivity of the hole transport layer and further improve the power conversion efficiency (PCE). However, the dopants added into the HTM layers have been confirmed that are moisture sensitive, which may accelerate the degradation of the solar cell devices and induce device instable. In this work, we designed a new series of HTMs named X61 and X62 with spiro[dibenzo[c,h]xanthene-7,9'-fluorene] (SFBX) as the skeleton. This SFBX skeleton is a spiro-type core unit but has an extended conjugation system compared with well-known spiro[fluorine-9,9’-xanthene] (SFX) skeleton, which is more beneficial for the charge transport and results in the good photovoltaic performance in perovskite solar cell devices. Herein, we applied X61 and X62 as dopant-free HTMs. One of them, the X62-based PSCs obtained a PCE of 15.94%, short-circuit photocurrent density (JSC) of 22.42 mA‧cm-2, open-circuit photovoltage (VOC) of 1.01 V, and fill factor (ff) of 70.42%. As a reference, the standard HTM Spiro-OMeTAD-based device also be measured under the same condition and reached an efficiency of 10.84%, with JSC of 19.89 mA‧cm-2, VOC of 1.04 V and ff of 52.61%. This work demonstrates that the larger conjugation system core unit SFBX based dopant-free HTMs with better steric configuration could be efficient candidates in PSCs.
1. D. Bi, B. Xu, P. Gao, et al. Nano Energy, 2016, 23, 138-144.
2. B. Xu, D. Bi, Y. Hua, et al. Energy Environ. Sci., 2016, 9, 873.
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.