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.
February 2018: other important results at CHOSE!
Efficiency record for a perovskite module realized with the Charon automated blade coater of Cicci Research s.r.l.
Thanks to Luigi Vesce, Luigi Angelo Castriotta, Alessandro Lorenzo Palma and Fabio Matteocci.
The 19th edition of the International School on Hybrid and Organic Photovoltaics (ISOPHOS®) will be held from the 2nd till 6th of September 2019 in the wonderful atmosphere of Castiglione della Pescaia (Italy)
CHOSE organizza in collaborazione con l'Università degli Studi di Roma Tor Vergata e l'associazione FREEnergy un Master di II livello in "Ingegneria del Fotovoltaico" .
Università degli Studi di Roma
"Tor Vergata"
On the importance of ferroelectric domains for the performance of perovskite solar cells
The effect of ferroelectric polarization patterns in MAPbI3 on JV characteristics has been analyzed. We discuss models for the polarization orientation pattern and magnitude of the ferroelectric domains. Simulations performed on real patterns show that the presence of ordered ferroelectric domains, even with a weak characteristic polarization magnitude enhances the power conversion efficiencies and are mandatory to reproduce the experimental J-V characteristics.
A Crystal Engineering approach for perovskite solar cells and modules fabrication out of the glove box
we fabricated high efficiency perovskite solar cells (PSC) and perovskite solar modules (PSM) utilizing several Hole Transport Layers (HTLs). The results show that the Crystal Engineering approach remarkably improved the device performance reaching a power conversion efficiency of 17%, 16.8% and 7% for spiro-OMeTAD, P3HT and HTL free, respectively.
Fully-sprayed flexible polymer solar cells with a cellulose-graphene electrode
Light, flexible and low-cost organic solar cells made entirely by spray and with an innovative cellulose and graphene-based electrode! The work, in collaboration with the Smart Materials group of the ISTITUTO ITALIANO DI TECNOLOGIA has been published on the important magazine "Materials Today Energy".
Highly efficient perovskite solar cells for light harvesting under indoor illumination via solution processed sno2/mgo composite electron transport layers
A new architectures in CH3NH3PbI3 based planar perovskite solar cells incorporating solution processed SnO2/MgO composite electron transport layers that show the highest power outputs ever reported under typical 200–400 lx indoor illumination conditions.
Perovskite solar cells on paper and the role of substrates and electrodes on performance
The first perovskite solar cell (PSC) fabricated directly on a paper substrate with a maximum power conversion efficiency of 2.7% is here reported.
Photoelectrochemical and spectrophotometric studies on dye-sensitized solar cells (dscs) and stable modules (dscms) based on natural apocarotenoids pigments
We present a study on dye-sensitized solar cells (DSCs) and we fabricate dye-sensitized solar modules (DSCMs) based on natural apocarotenoids extracted from the achiote's seeds (annatto). Use of less polar solvent such as diethyl ether improves the bixin concentration in the annatto extract which, was employed as sensitizer in the devices.
Fully laser processed Perovskite Solar Cell modules with 95% Aperture Ratio
Laser patterning has been applied to realize Perovskite solar modules with a ratio between active and total substrate area of 95% and an efficiency of 9.3%. These values are new records for large area (14.5 cm2) fully laser processed perovskite devices. This work signs a forward step to the industrialization of perovskite based solar technology. Results have been published on IEEE Journal of Photovoltaics DOI: 10.1109/JPHOTOV.2017.2732223
Graphene-Perovskite Solar module with efficiency 12.6% on 50 cm2
Graphene interface engineering (GIE) is proposed as an effective way to boost efficiency in Perovskite solar cells and modules.
A record efficiency of 12.6% on 50 cm2 module active area has been achieved by introduce Graphene in the mesoporous TiO2
and lithium neutralized graphene oxide (GO-Li) at the mTiO2/perovskite.
Results have been published on ACS Energy Lett. 2017, 2, 279−287
Reduced Graphene Oxide as Efficient and Stable Hole Transporting Material in Mesoscopic Perovskite Solar Cells
Nano Energy
DOI: 10.1016/j.nanoen.2016.02.027
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.
We fabricated perovskite based solar cells using CH3NH3PbI3-xClx with different hole transporting materials such as Spiro-OMeTAD and P3HT.
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.
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.
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).
