Nanostructured Materials for Photovoltaic Energy

Group Leader: Mónica Lira-Cantú

Main Research Lines

  • Photovoltaics: next-generation thin film, organic, hybrid, dye-sensitised, halide perovskite and all-oxide solar cells

  • Synthesis of nanomaterials by low-cost, low-temperature and green solution processing methods

  • Solution processing methods for the fabrication of solar cells and printed electronics

  • Degradation studies of the stability of solar cells following ISOS protocols

  • Semiconductor oxides for energy, ICT applications and printed electronics

  • Self-powered transparent, flexible electronic and optoelectronic devices

The NMPE group research objectives are focused on the synthesis of novel nanomaterials and the control of their optoelectronic properties through their manipulation at molecular level, with the aim of developing highly stable and highly efficient perovskite solar cells. Specifically, our contribution is in the area of solution processable metal oxides (classical and complex), halide perovskites (Pb-free, 2D and 3D) and, more recently, 2D materials and MXenes. We aim at the development of highly stable solar cells for industrial applications (e.g. building integration PV) and novel self-powered photovoltaic-based devices for Internet of things (IoT) applications (e.g. sensors, wearables, printed electronics). The group, with more than 15 year of experience in the field, is internationally recognized for its involvement in the enhancement of the operational stability of emerging photovoltaics and the development of ISOS protocols.

Fundamental Research Lines: Various of our lines of study are related to highly innovative and fundamental research within technology readiness levels (TRLs) below 2. We aim at the synthesis of materials as absorbers, transport layers and interfaces in solar cells. This line includes the synthesis of novel materials such as Pb-free halide perovskites, 2D materials and halide perovskites, novel anti-perovskites. More recently, we have initiated the development of novel MXenes and 2D materials. One of the objectives of this research is the manipulation of materials properties to enhance solar cells stability and the understanding of the mechanisms that permit their stability. We focus on the study and passivation of point defects of materials and interfaces.

Another major goal of the group is the synthesis of nanostructured materials, especially those involving transition metal oxides (TMOs), via the application of low-cost and solution processing methods. They have many possible applications as main active materials or barrier layers, but also as materials for external light management. The use of low-temperature synthesis methods (sol gel, hydrothermal, SILAR, among many others) permits tuning and controlling the properties of the final device. These oxides are being applied in our group as nanostructured materials (nanorods, nanowires, nanotrees, core-shell, etc.) and dense thin films in the various next-generation solar cells, offering excellent performance in term of efficiency and lifetime. We are now functionalising these oxide surfaces by anchoring self-assembled monolayers with selected anchoring groups to interact simultaneously with the oxide and the active light harvesting material.

Applied Research Lines: Our applied research lines are dedicated to the development of novel and innovative devices whose technology readiness levels (TRLs) can be up to 7. We are working on high-efficiency perovskite solar cells and novel printed electronic devices, which can allow the group to collaborate with industry and to obtain intellectual property rights. We are also collaborating with top laboratories for the development of protocols and standards, which can help the perovskite solar cell technology to reach the market.

The group also works on the development of self-powered electronic and optoelectronic devices, as well as flexible and transparent devices for ICT and electronic applications.

Group Leader

Mónica Lira-Cantú

CSIC Research Scientist

After completing a Bachelor’s degree in Chemistry in 1992, Dr Monica Lira-Cantu obtained her Master’s and PhD degrees in Materials Science at the Institut de Ciència de Materials de Barcelona (ICMAB) and the Universitat Autònoma de Barcelona in 1995 and 1997, respectively. She worked as a postdoctoral fellow with Schneider Electric and ICMAB until 1998. From 1999 to 2001 she was a permanent senior staff chemist at ExxonMobil Research & Engineering (formerly Mobil Technology Co) in New Jersey (USA), establishing a group on energy-related applications.

Dr Lira-Cantu has received various awards, as well as visiting scientist fellowships at the following laboratories: Universitetet i Oslo (Norway) (ESF, 2003), RisDTU Nationallaboratoriet (Denmark) (AGAUR, 2004/05) and the Center for Advanced Science and Innovation (Osaka University, Japan) (Canon Foundation in Europe, 2006). She obtained a permanent position in 2007 at the Consejo Superior de Investigaciones Científicas (CSIC) and established the ICN2 Photovoltaic Energy Group.

She has coordinated and organised over 15 scientific conferences and is currently a scientific referee for more than 15 international and European research agencies, and 52 scientific journals. She is a member of the editorial board of SN Applied Science (Nature), Journal of Materials Chemistry C (RSC), Journal of Physics Energy (IOP), Journal of Photonics for Energy (SPIE) and Frontiers in Energy Research: Solar Energy (Frontiers). She is a member of the advisory board for the Nanotechnology and Chemical Science degree (INCQ) of the Instituto Tecnológico y de Estudios Superiores de Monterrey (Mexico).

Her research interests lie in the synthesis and application of nanostructured materials for high efficient and high stable next-generation thin-film solar cells: halide-perovskite, dye-sensitised, alloxide and organic solar cells. Currently, the group has developed halide perovskite solar cells with > 21% efficiency and 1000 h stability under continuous illumination. The group also focuses on the application of solar cells in printed battery-less, self-powered electronics for the IoT (on flexible, transparent and/or smart materials).

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