Solution-Grown Monocrystalline Hybrid Perovskite Films for Hole-Transporter Free Solar Cells

Lingfei Wang ^a, Wei Peng^a, Osman Bakr ^a, Omar Mohammed ^a, Erkki Alarousu ^a, Dong Shi^a, Lutfan Sinatra^a, Jun Pan^a, Banavoth Murali ^a, Namchul Cho ^a, Chen-Fang Kang ^b, Jr-Hau He^b, Kang-Ting Ho ^b, Tom Wu^c, Chun Ma^c, Ashok Bera ^c, Victor Burlakov^d, Alain Goriely^d, Wei Xu^e

^aSolar and Photovoltaics Engineering Research Centre, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia

^bDivision of Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia

^cMaterials Science and Engineering, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia

^dMathematical Institute, University of Oxford, Woodstock Road, Oxford OX2 6GG

^eImaging and Characterization Lab, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia

Materials for Sustainable Development Conference (MATSUS)
Proceedings of September Meeting 2016 (NFM16)

Berlin, Germany, 2016 September 5th - 13th

Organizers: Marin Alexe, Enrique Cánovas, Celso de Mello Donega, Ivan Infante, Thomas Kirchartz, Maksym Kovalenko, Federico Rosei, Lukas Schmidt-Mende, Laurens Siebbeles, Peter Strasser, Teodor K Todorov, Roel van de Krol and Ulrike Woggon

Oral, Wei Peng, presentation 205
Publication date: 14th June 2016

The advent of low-trap-density, high-mobility single-crystal semiconductors has propelled innovations in optoelectronic device architectures and performance. For hybrid perovskites, such promise is thwarted by the inability to realize their monocrystalline films, which have defied conventional deposition techniques. Here, we report a cavitation-triggered asymmetric crystallization (CTAC) approach to grow high-quality perovskite monocrystalline films (down to 1 μm thin). These films enabled us to fabricate perovskite solar cells (PSCs) with a simple Schottky junction-based architecture, indium tin oxide (ITO)/CH₃NH₃PbBr₃/Au, which offers superior stability in the case of no encapsulation, near-unity internal quantum efficiency, and promising power conversion efficiencies (PCEs) > 5% for prototype cells. Furthermore, by using a single p-n junction (i.e. perovskite/TiO₂)-based device structure, we achieved PCEs of ~ 6.5%, the highest among hole-transporting layer-free CH₃NH₃PbBr₃ solar cells to date. Our results raise the possibility of solving key challenges impeding the development of PSCs in terms of stability and architecture simplification by employing monocrystalline perovskite films.

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.

MATSUS

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.

International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics

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.