Control of the Charge Recombination Kinetics Using Thin Al2O3 Passivation Coating the mp-TiO2 in MAPI (Methyl Ammonium Lead Iodide) Solar Cells.

Emilio Palomares^a, José Manuel Marín-Beloqui^a

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)

Roma, Italy, 2015 May 11th - 13th

Organizer: Filippo De Angelis

Poster, José Manuel Marín-Beloqui, 353
Publication date: 5th February 2015

We present herein a methodology to cover the mesoporous titanium dioxide scaffold with an atomic overlayer of aluminium dioxide from solution processing methods. The devices were fabricated following the architecture FTO / d-TiO₂/ mp-TiO₂(Al₂O₃ Coating) / CH₃NH₃PbCl_xI_3-x/ OMeTAD / Au. With this atomic Al₂O₃ overlayer, it is possible to increase both, the Open-Circuit Voltage (V_oc) of the solar cell and the reproducibility of the device performance, compared with the un-coated devices. In order to study the charge transfer reactions that take place in the solar cell, optoelectronic measurements as Photo-induced Charge Extraction (PICE), Photo-Induced Transient PhotoVoltage (PIT-PV) and Photo-Induced Transient Photo-Current (PIT-PC) were carried out on efficient devices. The data obtained with these techniques shows that the enhancement of Voc came from the reduction of the charge recombination in the device. This can also be related with the enhancement of the reproducibility as it reduces the centres of recombination that decreased the efficiencies in uncoated devices.

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.