September 13 2023

Between September 18 and 24, we will attend the largest photovoltaic conference, EU-PVSEC in Lisbon. We will be present at this year's 40th jubilee conference in two roles, namely the scientific part and the exhibition part. We will present our results with nine contributions, six with first authorship and three with co-authorship. At the parallel exhibition, we will present our solutions for monitoring and characterization of photovoltaic modules and solar cells.

Scientific contributions with first authorship:

  • 3AV.2.16, Matevž Bokalič, Benchmarking of Thin-Film PV Module Long-Term Outdoor Stability
  • 2BV.2.15, Darjo Uršič, Reaching Long-Term Indoor Operation of Self-Sustained IoT Devices with Perovskite Solar Cells
  • 2BV.2.18, Matija Pirc, Long-Term Monitoring System for Perovskite Solar Cells under Realistic Indoor Conditions
  • 2BV.2.19, Marko Jošt, Towards Sustainable and Efficient Indoor PV Using Perovskite Solar Cells
  • 2CO.1.6, Špela Tomšič, Modelling Performance and Degradation of Perovskite-Silicon Tandem Devices under Outdoor Operating Conditions
  • 2CO.3.6, Miha Kikelj, 3-Terminal Perovskite-Silicon Tandems: from a Peculiar Research Device to a Potential Module Level Solution for the Future?

Scientific contributions with co-authorship:

  • 2BO.9.2, M. Khenkin, HZB, Berlin, Reality Check for Perovskite Photovoltaics: Performance and Stability in Outdoor Environment
  • 5DO.10.1, C. Sanz-Cuadrado, UPM, Madrid, Unlocking the Potential of Photovoltaic Energy Communities in the Public Sector: Action for the PV Community
  • 5EO.3.3, E. Vartiainen, Fortum Renewables, Finland, Attractiveness of PV Prosumerism in the European Electricity Market

Exhibition booth A1

Above list in PDF.

We look forward to meeting you in Lisbon!


Dvořák Lecture by Marko Topič

June 15 2023

Prof. dr. Marko Topič gave a Dvořák Lecture at the Institute of Physics of the Czech Academy of Science entitled Photovoltaics at Terawatt Scale – Science, Engineering and Technology in Energy Transition.

In his lecture he covered the topics ranging from Solar PV’s main role in achieving clean energy targets to the latest research challenges in photovoltaic research. He also presented the success story of the Laboratory of Photovoltaics and Optoelectronics (LPVO).

More in press release at FZJ.


The 9th Slovenian Photovoltaic Conference SLO-PV 2023

June 7 2023

The Laboratory of Photovoltaics and Optoelectronics, together with its partners, organized the 9th Slovenian Photovoltaic Conference SLO-PV 2023, which took place on Wednesday, June 7, 2023, at the Faculty of Electrical Engineering, Tržaška cesta 25 in Ljubljana.

This year's photovoltaic conference was opened by the Minister of Environment, Climate, and Energy, Bojan Kumer, MBA. After the introductory speech by Prof. Dr. Marko Topič, two examples of good practice in the use of photovoltaics were presented, along with the latest developments in Slovenian legislation in this field. A section on the successes of the Slovenian photovoltaic industry, with a focus on solar power plant protection, followed. The conference concluded with a section on the impact of photovoltaics on the environment and society.

More information: the conference website (recordings of the presentations are available).


Best poster award at ECIO23

April 22 2023

At the 24. European Conference on Integrated Optics the member of Laboratory for Photovoltaics and Optoelectronics as. dr. Andraž Debevc recieved the third prize for the best poster at the conference along with coatuthors of the contribution prof. dr. Marko Topič and prof. dr. Janez Krč. The comitee awarded 3 best posters out of a total of 46 posters that were presented at the conference.

In the contribution an innovative implementation of integrated silicon polarization beam splitter based on metamaterials exhibiting a high extinction ratio in a wide wavelength range was presented.


Article in Journal Science

April 7 2023

The prestigious scientific journal Science published the article Photovoltaics at multi-terawatt scale: Waiting is not an option, which was signed by the most prominent American, Asian and European experts in the field of photovoltaics, including Prof. dr. Marko Topič from the Laboratory for Photovoltaics and Optoelectronics together with five colleagues of the European Technology and Innovation Platform (ETIP PV), to which Prof. Topič presided until recently.

The article talks about the important contribution of photovoltaics to the transformation of energy, which was prepared by the aforementioned experts after the third international Terawatt Workshop. The article substantiates the reasons for the exponential growth of photovoltaics, which exceeded the total power of 1000 GW of solar power plants by 2022 and, based on current research and innovation, projects that in the next decade we will maintain a 25% annual global growth of photovoltaics and reach 75 TW of installed solar power by 2050 power plant. Given the climate crisis, hesitation is out of the question. At this rate, photovoltaics will play a key role in limiting climate change and in the transition to sustainable energy. Not only in the field of electricity production, but also with the electrification of other energy sectors and the production of solar fuels with hydrogen at the forefront.


Holiday Wish

December 23 2022

The year 2022 was exceptional for photovoltaics in Slovenia, as the current estimate of newly connected solar PV power plants exceeds 250 MW. This is a 50% increase in the cumulative installed PV power, which mostly comes from private investments in small solar PV power plants in net-metering scheme.

The year 2022 was also exceptional for the Laboratory for Photovoltaics and Optoelectronics. We will remember it for the excellent achievements of its members:

  • Prof. Em. Dr. Franc Smole – elected as a Professor Emeritus of University of Ljubljana
  • Prof. Dr. Marko Topič – Becquerel Award for outstanding merits in Photovoltaics
  • Assoc. Prof. Dr. Marko Jankovec – Vidmar's Award
  • Asst. Prof. Dr. Marko Jošt et al. – Recognition for one of the top 10 research achievements of the University of Ljubljana in 2022

At the end of the year, we wish you to take the advantage of relaxing holidays for an effective rest, which will ensure the renewal of positive energy and prepare you for a healthy, successful and happy coming year 2023!

Happy New Year!


Start of the Pepperoni Project

November 25 2022

LPVO has started participation in the international Horizon Europe Pepperoni project. The Pepperoni consortium has 17 partners from 12 European countries. The project is led by German partners: the Helmholtz-Zentrum Berlin Institute and the manufacturer of solar cells and photovoltaic modules Q Cells.

The Pepperoni project (Pilot line for European Production of PEROvskite-Silicon taNdem modules on Industrial scale) is a four-year research and innovation project co-financed by the European Union within the Horizon Europe program and the Swiss State Secretariat for Education, Research and Innovation. The project focuses on the development of tandem perovskite-silicon solar cells. The aim of the project is to accelerate the development of tandem cells, their introduction to the market and the establishment of a pilot line as a basis for the introduction of new production capacities in Europe.

First press release.


LPVO at World photovoltaic conference WCPEC-8

September 16 2022

We will actively participate in the World Photovoltaic Conference WCPEC-8 in Milan between September 26 and 30. This year's world conference combines the European (39th EU PVSEC), American (IEEE PVSC-51) and Asian (PVSEC-32) photovoltaic conferences and will be held both live and online. We will participate in the conference in three roles, with scientific contributions and at the fair, while Prof. Dr. Marko Topič also as a recipient of the prestigious Becquerel Award.

Scientific contributions with first authorship:

  • 2AV.1.3, M. Remec, Quantifying Energy Losses Due to Light Soaking Effect in Perovskite Solar Cells under Outdoor Conditions
  • 2AV.1.47, D. Uršič, Energy Harvesting from a Single Lab-Scale Perovskite Solar Cells for Self-Powered Indoor IoT Applications
  • 2AV.3.11, M. Kovačič, Optical Effects of Laser-Reduced Graphene Oxide Layers in Tandem Perovskite/CIGS Solar Cells studied by Numerical Simulations
  • 2AV.3.12, Š. Tomšič, Modelling and Optimization of Perovskite-Silicon Tandem Devices for Enhanced Field Energy Production
  • 1BO.4.6, M. Bokalič, Insights into Cut-edges of SHJ Solar Cells by EL and LBIC Characterization
  • 2BO.9.1, K. Brecl, The impact of high negative bias on perovskite solar cells in PID testing
  • 3DV.1.43, U. Barbič, Stand-alone IoT Enabled Bifacial Irradiance Sensor for PV
  • 1DV.4.7, M. Kikelj, Cut out for Efficiency: A Detailed LBIC Study of Edge Recombination in Cut-Cell Silicon Photovoltaics

Scientific contributions in collaboration:

  • 2AV.3.15, L. Senaud, High Efficiency 3-Terminal Perovskite/Silicon Tandems Based on Tunnel Junction IBC
  • 2BO.9.6, M. Khenkin, Indoor and Outdoor Ageing of Perovskite Solar Cells: Long-Term Stability vs Meta-Stability
  • 3CO.6.3, L. Tous, Overview of Key Results Achieved in H2020 HighLite Project Helping to Raise the EU PV Industries’ Competitiveness
  • 4DO.3.5, A. Faes, Photovoltaics Modules and Systems Monitoring within HighLite H2020
  • 5DV.2.69, S. Nowak, PV Will Shine in the New Clean Energy Transition Partnership

At the exhibition, we will present our solutions in the field of measuring solar cells and monitoring photovoltaic modules at stand E5. We will also be present at stand C8, where together with our European partners we will present the results of the HighLite and SuperPV projects.

The Becquerel Prize Award ceremony will take place as part of the first plenary section of the conference, on Monday, September 26, at 9:30 am.



LPVO at MOS 2022 fair

September 13 2022

International craft fair (MOS) will take place between September 14 and 18 in Celje. LPVO participates in the Intersection of Science and Economy (Stičišče znanosti in gospodarstva), which promotes achievements of Slovenian science and strives for closer cooperation between scientific and economic spheres.

We are present at the booth 16, which is located on the first floor of hall L1.



Becquerel Prize

August 22 2022

Prof. Dr. Marko Topič is this year awardee of the Becquerel Prize. The Becquerel Prize, named after the inventor of the photovoltaic effect, Alexandre-Edmond Becquerel, is granted by the European Comission to a single individual who is recognized for outstanding merits in the field of photovoltaics.

The official award ceremony take place on the occasion of the 8th World Conference on Photovoltaic Energy Conversion, which will take place between September 26 and 30 2022 in Milan.

LinkedIn post.



Free PhD position in LPVO

August 1 2022

In the Laboratory for Photovoltaics and Optoelectronics, we have a vacancy for a young researcher in the field of integrated photonics.

In this field, in the laboratory, we deal with the design, manufacture and characterization of photonic structures and photonic integrated circuits based on silicon technologies. We are involved in the Quantera project in the field of quantum photonics for the production of efficient quantum-photonic circuits produced with the help of microtransfer printing on a silicon-nitride platform. There are many new challenges for the doctoral dissertation in this field.

The PhD student will be involved in the current research in the field of integrated photonics at the Faculty of Electrical Engineering in cooperation with leading European institutions in the aforementioned field.

Welcome to the world of integrated photonics!

Contact person: Janez Krč


Kick-off of the qTP4Q Project

June 24 2022

The Quantera uTP4Q project partners met at the kick-off meeting of the project at the University of Ghent in Belgium (June 22 2022). The Laboratory for Photovoltaics and Optoelectronics (LPVO) acts as one of six partners on behalf of the University of Ljubljana.

The project entitled A versatile quantum photonic IC platform enabled by micro-transfer printing - uTP4Q extends to the field of integrated quantum photonics. Using the micro-transfer printing method, we intend to combine different components of quantum photonics (single-photon sources, modulators, photodetectors, optical couplers and other components), which are fabricated on different photonic platforms, into a single quantum-photon integrated circuit. You can read more about the project on the web link.



Tapas project meeting

June 17 2022

After the successful completion of the EuroReg PV workshop, we hosted a meeting of the Tapas project at the Laboratory for Photovoltaics and Optoelectronics within the Faculty of Electrical Engineering. The Tapas project is a project funded by the Helmholtz European Partnership programme, which focuses on strengthening the existing cooperation between Helmholtz Zentrum Beriln and University of Ljubljana. The topic of the Tapas project is the field of tandem perovskite-silicon solar cells with an emphasis on stability research, finding the source of degradation with advanced characterization techniques, development of dedicated characterization equipment and optoelectric modelling.


Free PhD positions in LPVO

June 15 2022

In the Laboratory for Photovoltaics and Optoelectronics, we have two vacancies for young researchers to work on interesting, current topics. One topic is in the field of photovoltaics and the other in the field of photonics. Contact us for more detailed information. Young researchers are enrolling in doctoral studies at the Faculty of Electrical Engineering in the coming academic year.

The deadline for applying for vacancies is short, so please contact Prof. Dr. Janez Krč or Prof. Dr. Benjamin Lipovšek as soon as possible (no later than June 30, 2022).


The 8th Slovenian Photovoltaic Conference SLO-PV 2022 and Workshop EuroReg-PV 2022

June 8 2022

The Laboratory for Photovoltaics and Optoelectronics and the Slovenian Technological Platform for Photovoltaics are organizing the 8th Slovenian Photovoltaic Conference SLO-PV 2022, which will take place on Tuesday, 14 June 2022, between 9 am and 2 pm at the Faculty of Electrical Engineering, Tržaška cesta 25 in Ljubljana.

At this year's photovoltaic conference, experts will present the latest trends in research and development of solar cells, photovoltaic modules, inverters or photovoltaic systems. They will provide relevant information on the management and maintenance of photovoltaic systems, talk about the development of the Slovenian photovoltaic market and provide answers to questions regarding the installation of a solar power plant and connection to the electricity grid. There will also be a fair presentation of companies offering products and services in the field of photovoltaics and sustainable energy. Attendance at the conference is free, only registration is required.

The EuroReg-PV 2022 workshop will be held shortly after the SLO-PV 2022 conference from 16 to 17 June 2022 at the Faculty of Electrical Engineering in our organization.


Article in Journal ACS Energy Letters

March 10 2022

An article entitled Perovskite/CIGS Tandem Solar Cells: From Certified 24.2% toward 30% and Beyond was published yesterday in one of the top five international scientific journals in the field of energy and nanosciences, ACS Energy Letters. The article presents a record Perovskite/CIGS tandem solar cell with 24.2% conversion efficiency, which was the result of collaboration between the Laboratory for Photovoltaics and Optoelectronics (LPVO) and Helmholtz Zentrum Beriln (HZB). Dr. Marko Jošt is the first author, the other co-authors from LPVO are young researcher Špela Tomšič, Assoc. Prof. Dr. Benjamin Lipovšek and Prof. Dr. Marko Topič.


The first press release from the Aurora project

January 18 2022

As part of the Aurora project, we issued the first press release. You can downloaded it in several languages from the project website.

Center of Distributed Energy SourcesPhotovoltaic technology platformSlovenian Photovoltaic Industry AssociationEuropean Energy Research Alliance