Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP20)
Publication date: 14th October 2019
Recently, the power conversion efficiency of perovskite solar cells has been significantly improved over 25% which is comparable to that of Si solar cells. Among different device structures, including mesoporous and planar structures, inverted planar perovskite solar cells structure has attracted considerable attention due to its simple, low-temperature fabrication process, and mostly low hysteresis. However, the conversion efficiency of most NiOx based inverted planar perovskite solar cells is limited below 20% due to the insufficient electronic conductivity of NiOx.
In this work, solution-processed Al-doped NiOx hole collectors were developed for the fabrication of inverted planar perovskite solar cells with device structure (ITO/Al-NiOx/MAPbI3/PCBM/Am-TiOx/Ag). We observed that Al-doped NiOx dramatically improved the electrical conductivity of NiOx, which enhanced the hole extraction/transportation by reducing the contact resistance and carrier recombination losses at the NiOx-perovskite interface. Furthermore, the Al-doped NiOx films significantly controlled the crystal growth and improved the crystallinity of the perovskite film with reduced energetic disorders because of their high smooth surface. The devices with Al-doped NiOx hole collectors showed a higher efficiency of 20.84% with negligible hysteresis than the pristine device (16.56%). Furthermore, the Al-doped hole collectors showed 11% higher stability than the pristine device after 72 days of storage without encapsulation. Thus Al-doped NiOx can be a promising hole collector for highly efficient perovskite solar cells.
This work was partly supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (20193091010160, Development of 3D eyed transparent inorganic photovoltaic module) and supported by National Research Foundation of Korea (NRF) grants funded by the Korean government (MSIT) (NRF- 2018R1C1B6008028, 2019K2A9A2A08000132).
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.