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ICFO > Event > Jordi Martorell (ICFO)
Schools
From July 1, 2024 to July 3, 2024
Jordi Martorell (ICFO)

All day

Place: ICFO Auditorium

Jordi Martorell (ICFO)

BIO:

Jordi Martorell received a PhD degree in Physics from Brown University (USA). Currently, he is a full professor at the UPC and head of the organic nano-structured photovoltaics group at ICFO. His current research is focused on studying the role played by optics or photonics in the transformation of sunlight energy into other forms of energy such as, for instance, electricity or solar fuels to store chemical energy. Among the contributions made in the field stands out a world record performance for semi-transparent single junction organic solar cells. In 2021 he was co-founder of the company VITSOLC that spun out from ICFO with mission to industrialize and commercialize transparent organic modules.

TALK: "Reducing Boltzmann losses to optically enhance the open circuit voltage in solar cells"

Most of the existing light management strategies to enhance the performance of solar cells predominantly target an increase in short-circuit current density via a more effective sunlight absorption. On the other hand, optical approaches to reduce Voc losses are seldom explored. In the current lecture we will explore enhancing the efficiency of organic and perovskite solar cells by focusing on improving the open-circuit voltage (Voc) considering the incorporation of a nanophotonic structuration designed to serve as an angular restrictor for the emission photons.
 
We will present different nanophotonic strategies which primary objective is to mitigate losses associated with bimolecular radiative recombination, specifically Boltzmann losses, without the reliance on sunlight concentration. This approach aims to preserve the advantages inherent from a planar configuration in solar cells. We will discuss numerical and experimental results where light emission and quasi-Fermi level splitting is modified by the incorporation of different nanophotonic structures. We will also discuss how such control on the Voc may open paths to push the planar geometry single junction solar cell power conversion efficiency limit from 33% to levels close to 43%.
Schools
From July 1, 2024 to July 3, 2024
Jordi Martorell (ICFO)

All day

Place: ICFO Auditorium

Jordi Martorell (ICFO)

BIO:

Jordi Martorell received a PhD degree in Physics from Brown University (USA). Currently, he is a full professor at the UPC and head of the organic nano-structured photovoltaics group at ICFO. His current research is focused on studying the role played by optics or photonics in the transformation of sunlight energy into other forms of energy such as, for instance, electricity or solar fuels to store chemical energy. Among the contributions made in the field stands out a world record performance for semi-transparent single junction organic solar cells. In 2021 he was co-founder of the company VITSOLC that spun out from ICFO with mission to industrialize and commercialize transparent organic modules.

TALK: "Reducing Boltzmann losses to optically enhance the open circuit voltage in solar cells"

Most of the existing light management strategies to enhance the performance of solar cells predominantly target an increase in short-circuit current density via a more effective sunlight absorption. On the other hand, optical approaches to reduce Voc losses are seldom explored. In the current lecture we will explore enhancing the efficiency of organic and perovskite solar cells by focusing on improving the open-circuit voltage (Voc) considering the incorporation of a nanophotonic structuration designed to serve as an angular restrictor for the emission photons.
 
We will present different nanophotonic strategies which primary objective is to mitigate losses associated with bimolecular radiative recombination, specifically Boltzmann losses, without the reliance on sunlight concentration. This approach aims to preserve the advantages inherent from a planar configuration in solar cells. We will discuss numerical and experimental results where light emission and quasi-Fermi level splitting is modified by the incorporation of different nanophotonic structures. We will also discuss how such control on the Voc may open paths to push the planar geometry single junction solar cell power conversion efficiency limit from 33% to levels close to 43%.