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The Centre for Hybrid and Organic Solar Energy (CHOSE) was founded in 2006 from the will of the Lazio Region and the University of Rome Tor Vergata to create a center of excellence in the field of next-generation photovoltaics. CHOSE is distributed across several laboratories, both within the University Campus of Tor Vergata and the Technopole Tiburtino. The latter consists of a 400 square meter laboratory that houses equipment for the fabrication and characterization of organic, hybrid, dye sensitized and perovskite photovoltaic cells, modules and panels and 150 square meters of office space for the incubation of spin-offs generated from research at CHOSE. The other laboratories, totalling roughly 300 square meters in extension, are located within different departments of Tor Vergata. At CHOSE there work more than 30 researchers including graduate students, postdocs and staff. CHOSE has also many collaborations at the regional, national and international levels.

The main objectives of CHOSE consist in the development of fabrication processes for organic and hybrid organic / inorganic solar devices, the definition of a process for the industrialization of these innovative photovoltaic technologies, the technological transfer of these and the development of photovoltaic applications in collaboration with companies at both the domestic and international level.

CHOSE Team photo

CHOSE also proposes itself as a reference point for photovoltaic technologies and their applications. In particular, in order to develop specific knowledge within the fields of both conventional and innovative photovoltaics and to prepare profiles of workers that are able to operate over the whole photovoltaic value chain, CHOSE manages a Masters degree course on "Photovoltaic Engineering" and an International School called ISOPHOS dedicated to PhD students and researchers.

After 9 years of operation, CHOSE has trained more than 100 profiles among undergraduates, masters students, PhD students, post-docs and has contributed to the spread of photovoltaic concepts also in primary and secondary schools. These actions have enabled CHOSE to capitalize on the intellectual potential present in the region and to mitigate the phenomenon of the brain drain that is dangerously undermining the innovation capacity of the Italian system.

At the international level, CHOSE is part of the European Energy Research Alliance (EERA), the largest European platform for the development of research and technologies in the energy field and is a member of the famous Graphene Flagship, the most important European research action on graphene and related materials. Since its founding, CHOSE has participates or has participated in more than 10 European projects.


Sun Trip 2015


Antonio De Chiara ha concluso in nona posizione su 25 partecipanti il Sun Trip 2015. Primo italiano a partecipare e concludere con successo il Sun Trip. Ha viaggiato, con la sua bici tandem solare, in 10 paesi differenti totalizzando 7000km in soli 54 giorni, scoprendo paesaggi inediti ,incontrando locali e spiegando cosa significhi energia solare e viaggiare liberamente grazie al sole.
Ulteriori 5000km percorsi da Milano a Berlino e ritorno a Salerno per un totale di 12000km ,3 mesi di viaggio effettivi, 5 mesi su strada.



Read more: Sun Trip 2015

Breaking news: CHOSE push the record of Perovskite module efficiency up to 13%

Researchers of CHOSE fabricated a Perovskite module on 10cm2 active area with a record efficiency of 13%. The results of the work have been published on Progress in Photovoltaics.

We fabricated monolithic solid state modules based on organometal CH3NH3PbI3 and CH3NH3PbI3-xClx perovskites using poly-(3-hexylthiophene) and Spiro-OMeTAD as hole transport materials (HTMs). In particular, we developed innovative and scalable patterning procedures to minimize the series resistance at the integrated series-interconnections. By using these optimization steps, we reached a maximum conversion efficiency of 8.2% under AM1.5G at 1 Sun illumination conditions using the CH3NH3PbI3-xClx perovskite and the poly-(3-hexylthiophene) as HTM. Finally, we investigated the double-step deposition of CH3NH3PbI3 using the Spiro-OMeTAD, reaching a maximum conversion efficiency on active area (10.08 cm2) equal to 13.0% (9.1% on aperture area) under AM1.5G at 1 Sun illumination conditions. This remarkable result represents the highest PCE value reached for the perovskite solar modules.



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perovskite module

We fabricated the first perovskite-based monolithic series-type module showing very promising results in terms of the power conversion efficiency, the reproducibility of the fabrication process and long-term stability.

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We fabricated perovskite based solar cells using CH3NH3PbI3-xClx with different hole transporting materials such as Spiro-OMeTAD and P3HT.

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We fabricated the first solid state dye solar cell (SDSC) module using poly(3-hexilthiophene) (P3HT) as Hole Transport Material for the dye regeneration process.

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Fully sprayed polymer solar cell modules open the way to bring Photovoltaics nominally everywhere, thanks to spray coating conformability to virtually any kind of substrate.

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We have demonstrated the feasibility of the fabrication of a photovoltaic greenhouse roof by using techniques based on solution processing (spray coating and screen printing).

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