Patent: Inorganic hole conductor based perovskite photoelectric conversion device with high operational stability at long term

A patent entitled “Inorganic hole conductor based perovskite photoelectric conversion device with high operational stability at long term” was filled on 3 May 2018 with reference WO/ 2018/203279. This invention relates to the introduction of a spacer layer in a Perovskite Solar Cell comprising organic-inorganic perovskite and an inorganic hole conductor as HTM, in particular CuSCN improves the performance of a PSC having an inorganic hole conductor. A spacer layer comprising reduced graphene oxide (rGO) between the metal or back contact of the device and the HTM layer comprising inorganic hole conductor prevents the dramatic loss of PCE of such PSCs after a treatment of continuous illumination and thermal stress. The presence of such spacer layer improves the long-term stability of a PSC comprising inorganic hole conductor to the point that the stability of such a device surpasses the stability of spiro-OMeTAD based PSCs.

More details about this patent can be found here: WO/2018/[email protected]

Influence of Disorder and Anharmonic Fluctuations on the Dynamical Rashba Effect in Purely Inorganic Lead-Halide Perovskites

J. Phys. Chem. C, DOI: 10.1021/acs.jpcc.8b11288.

3rd (and last) General Assembly Meeting in Manchester

The General Assembly of the GOTSolar project met in Manchester, 27 November 2017, accompanied by other consortium members for the meeting concluding the project. The main aim was to discuss the results and achievements, and evaluate the finalimpact of the project.

A novel avenue to high-performance, stable perovskite solar cells

GOTSolar's EPFL researchers from Michael Grätzel's lab show how stable, scalable, and efficient perovskite solar cells can be produced through molecular engineering of multifunctional molecular modulators and using solid-state nuclear magnetic resonance to investigate their role in double-cation pure-iodide perovskites. Published in Nature Communications.

A press release about this piece of research has been published by the EPFL MEDIACOM. Full text is available here:


Solar cells research at LPI EPFL. Photo: Piotr Krupiński

Very exciting excitons: a radio program by France Culture

Emmanuelle Deleporte made an appearance in France Culture national French radio station to talk about excitons and their engineering for contemporary photovoltaic devices. The program was a part of a well known series La methode scientifique and was entitled Les excitons: un potentiel très excitant.

Multifunctional molecular modulators for perovskite solar cells with over 20% efficiency and high operational stability

Nature Communications, 2018, 9, 4482.

Suppressing Defects Through Synergistic Effect of Lewis Base and Lewis Acid for Highly Efficient and Stable Perovskite Solar Cells

Energy Environ. Sci., 2018, 11, 3480-3490.

A series of lectures for undergraduate students by GOTSolar leaders

The professors included in the Project gave lectures for university students from various universities. All of them aimed at encouraging the young generation to rely more on the renewable energy sources with particular focus on perovskite photovoltaics.

Elastic softness of hybrid lead halide perovskites

Phys. Rev. Lett., 2018, 121, 085502.

Educational activities at the University of Porto

A course that comprehends the introduction of the different renewable solar technologies and the theoretical concepts behind this field of study was organised at the University of Porto for Master on Chemical Engineering students. Besides the technical and scientific matters, the course also approaches the political and economic challenges and strategies for a better implementation of renewable energy technologies in today’s society. Along with the lectures, students are also encouraged to learn more about renewable energies through the development of a project regarding renewable technologies of their choice. The course also organizes visits to the laboratories to show at first-hand the work that is being developed by the researchers in this field, mainly, the fabrication processes of PSC and dye-sensitized solar cells and their (photo)electrochemical characterization.

Outside the classrooms, UPORTO organized several visits to companies in the field of photovoltaics. Students faced the reality of the solar energy industry and the industrial processes of fabrication of solar panels, always keeping in mind the connection with the research developed in this area of work.

Figure 1.

Students visiting the MARTIFER SOLAR headquarters in Portugal