CHOSERICERCAPUBBLICAZIONI

HYBRID AND ORGANIC PHOTOVOLTAICS FOR GREENHOUSE APPLICATIONS

hybrid inorganic photov1

ABSTRACT

Reducing the energy demand and dependency on fossil fuels is crucial for improving the sustainability of greenhouses, which are the most energy intensive systems in the agricultural sector. Renewable technologies represent a key option to meet the greenhouse energy demands. Agrivoltaics has recently emerged as a strategy to combine farming activity and power generation through photovoltaics (PV). However, PV systems retrofitting needs to consider the interactions with the existing greenhouse structure, as well as the energy requirements of the equipment for climate control. The influences of PV shading on agronomic parameters have also to be carefully considered. Firstly, this review examines the response of plants to the light and the fundamental aspects of greenhouse facilities. Then, the state-of-the-art of PV systems applied to greenhouses is thoroughly analysed. Simulation studies and experimental works are examined to highlight the effects of PV technologies and module arrangements on energy production and plant growth. Particular attention is devoted to new PV technologies, i.e. organic, dye-sensitized and perovskite solar cells, because of their semi-transparency and flexibility, allowing the easy integration of PV modules into existing or newly conceived greenhouse structures.
The review has highlighted that the new PV technologies have an enormous potential due to the possibility of tuning their spectral features according to the characteristics of plants and to the capability of optimizing the use of solar energy into high-tech greenhouses. Shading through these innovative systems has also demonstrated to create a suitable atmosphere for crop growth especially in hot and tropical regions.

 

Authors:

Luca La Notte, Lorena Giordano, Emanuele Calabrò, Roberto Bedini, Giuseppe Colla, Giovanni Puglisi, Andrea Reale

Publication date: 25 September 2020

https://doi.org/10.1016/j.apenergy.2020.115582

Science Direct

https://www.sciencedirect.com/science/article/pii/S030626192031093X?fbclid=IwAR226lRUMI4YIGBXIPEs6qjv89uNSvsqlMSBWwHylyIjlKe-_uPEa7ucoZ8#!

 

EASY STRATEGY TO ENHANCE THERMAL STABILITY OF PLANAR PSCS BY PEROVSKITE DEFECT PASSIVATION AND LOW-TEMPERATURE CARBON-BASED ELECTRODE

planar perovskite1

 

ABSTRACT

Organic–inorganic lead halide perovskite has recently emerged as an efficient absorber material for solution process photovoltaic (PV) technology, with certified efficiency exceeding 25%. The development of low-temperature (LT) processing is a challenging topic for decreasing the energy payback time of perovskite solar cell (PSC) technology. In this context, the LT planar n–i–p architecture meets all the requirements in terms of efficiency, scalability, and processability. However, the long-term stability of the LT planar PSC under heat and moisture stress conditions has not been carefully assessed. Here, a detailed study on thermal and moisture stability of large-area (1 cm2) LT planar PSCs is presented. In particular, the key role in thermal stability of potassium iodide (KI) insertion in the perovskite composition is demonstrated. It is found that defect passivation of triple-cation perovskite by KI doping inhibits the halide migration induced by thermal stress at 85 °C and delays the formation of degradation subproducts. T80, defined as the time when the cell retains 80% of initial efficiency, is evaluated both for reference undoped devices and KI-doped ones. The results show that T80 increases 3 times when KI doping is used. Moreover, an HTL-free architecture where the Au top electrode is replaced with low-T screen-printable carbon paste is proposed. The combination of the carbon-based HTL-free architecture and KI-doped perovskite permits T80 to increase from 40 to 414 h in unsealed devices.

 

Authors:

Emanuele Calabrò, Fabio Matteocci, Barbara Paci, Lucio Cinà, Luigi Vesce, Jessica Barichello, Amanda Generosi, Andrea Reale, Aldo Di Carlo

Publication Date: 26 June  2020

https://doi.org/10.1021/acsami.0c05878

ACS Chemistry for Life

https://pubs.acs.org/doi/abs/10.1021/acsami.0c05878?fbclid=IwAR0O89DBCbDqEubJQTFUMLW-usGj0bPqLfr_uz06kx1ixIU5no4DBn5wWcI

 

ANALYSIS OF THE EFFICIENCY LOSSES IN HYBRID PEROVSKITE/PTAA SOLAR CELLS WITH DIFFERENT MOLECULAR WEIGHTS: MORPHOLOGY VERSUS KINETICS

Hybrid Perovskite PTAA

 

ABSTRACT

The PTAA polymer is often used as a hole transport material (HTM) for high-efficiency perovskite solar cells (PSCs). However, there are great differences within the solar cell efficiencies reported. Herein, we show that when increasing PTAA molecular weight (MW) from 10 to 115 kDa, the power conversion efficiency also increases. We analyze how the differences in MW influence the interfacial carrier losses in the PSCs under operando conditions using advanced photoinduced spectroscopic techniques. Moreover, we compare kinetics and structural/morphological effects by studying different PTAA MW films. Our results show that the observed differences within the reported PSC efficiencies are due to the differences in carrier recombination kinetics, which are influenced by the differences in the polymer MW.

Authors:

Narges Yaghoobi Nia, Maria Méndez, Barbara Paci, Amanda Generosi, Aldo Di Carlo, Emilio Palomares

https://doi.org/10.1021/acsaem.0c00956

ACS Applied Energy Materials

https://pubs.acs.org/doi/abs/10.1021/acsaem.0c00956

 

FABRICATION OF HIGH EFFICIENCY, LOW-TEMPERATURE PLANAR PEROVSKITE SOLAR CELLS VIA SCALABLE DOUBLE-STEP CRYSTAL ENGINEERING DEPOSITION METHOD FULLY OUT OF GLOVE BOX

Scalable crystal engineering

 

ABSTRACT

In this work the scalable Crystal Engineering approach was successfully applied to fabricate the CH3NH3PbI3 absorbing layer on low-temperature planar SnO2 under atmospheric conditions (fully out of glove-box). Photovoltaic characterization showed high-reproducible hysteresis-free planar perovskite solar cells with a maximum power conversion efficiency of 17.6%. The photophysical properties of the PSCs, evaluated by transient photovoltage and photocurrent analysis, showed the excellent capability of SnO2 to extract charge for perovskite. Non-encapsulated n-i-p planar solar cells indicated promising stability under atmospheric conditions, maintaining 90% of the initial efficiency for more than 1000 h. We demonstrate that the scalable air insensitive crystal engineering method is a promising approach for industrialization and fabrication of high efficiency, air-stable, and low-temperature planar perovskite solar cells with high reproducibility fabrication.

Authors:

Shiva Navazani, Narges Yaghoobi Nia, Mahmoud Zendehdel, Ali Shokuhfar, Aldo Di Carlo

https://doi.org/10.1016/j.solener.2020.05.084

Solar Energy Volume 206, August 2020, Pages 181-187

https://www.sciencedirect.com/science/article/abs/pii/S0038092X20305831

 

POLYMER/INORGANIC HOLE TRANSPORT LAYER FOR LOW-TEMPERATURE-PROCESSED PEROVSKITE SOLAR CELLS

P3HTCuSCN 1

ABSTRACT

In the work we introduce a hysteresis-free low-temperature planar PSC, composed of a poly (3-hexylthiophene)(P3HT)/CuSCN bilayer as a hole transport layer (HTL) and a mixed cation perovskite absorber. Proper adjustment of the precursor concentration and thickness of the HTL led to a homogeneous and dense HTL on the perovskite layer. This strategy not only eliminated the hysteresis of the photocurrent, but also permitted power conversion efficiencies exceeding 15.3%. The P3HT/CuSCN bilayer strategy markedly improved the life span and stability of the non-encapsulated PSCs under atmospheric conditions and accelerated thermal stress. The device retained more than 80% of its initial efficiency after 100 h (60% after 500 h) of continuous thermal stress under ambient conditions.

Authors:

Neda Irannejad, Narges Yaghoobi Nia, Siavash Adhami, Enrico Lamanna, Behzad Rezaei, Aldo Di Carlo

https://doi.org/10.3390/en13082059

MDPI Journals Energies Vol. 13 Issue 8

https://www.mdpi.com/1996-1073/13/8/2059

 

THIAZOLO[5,4-D]THIAZOLE-BASED ORGANIC SENSITIZERS WITH IMPROVED SPECTRAL PROPERTIES FOR APPLICATION IN GREENHOUSE-INTEGRATED DYE-SENSITIZED SOLAR CELLS

THIAZOLO DSC

 

ABSTRACT

Organic photosensitizers especially designed for producing semitransparent dye-sensitized solar cells (DSSCs) for greenhouse integration were prepared by introduction of different heterocyclic moieties into the thiazolo[5,4-d]thiazolemolecular scaffold. The aim was that of improving their light absorption capability in the green part of the visible spectrum while maintaining a good transparency in the blue and red regions, where the photosynthetic response is maximized. A short and efficient synthetic approach, featuring two consecutive C-H activation reactions in a one-pot procedure as key steps, was used. Based on their spectroscopic and electrochemical characterization, two of dyes prepared appeared especially suitable for greenhouse-integrated photovoltaics. The corresponding semitransparent DSSCs yielded 5.6-6.1% power conversion efficiencies, which were largely superior to those provided by other organic dyes previously proposed for the same application.

Authors:

Alessio Dessì, Massimo Calamante, Adalgisa Sinicropi, Maria Laura Parisi, Luigi Vesce, Paolo Mariani, Babak Taheri, Manuela Ciocca, Aldo Di Carlo, Lorenzo Zani, Alessandro Mordini, Gianna Reginato

https://doi.org/10.1039/D0SE00124D

Sustainable Energy & Fuels 2020

 

LOW TEMPERATURE PROCESS OF HOMOGENEOUS AND PIN-HOLE FREE PEROVSKITE LAYERS FOR FULLY COATED PHOTOVOLTAIC DEVICES UP TO 256 CM2 AREA AT AMBIENT CONDITION

PVK ISAECT 1

ABSTRACT

The versatility of printing/coating technologies together with the development of new hybrid and organic materials permit to revolutionize the photovoltaic (PV) research and manufacture. Among the new PV concept, perovskite solar cell technology has ascended top efficiencies in few years. The low-cost perspective of this III-GEN PV is however achievable only at industrial production levels. To this end, we developed a simple yet scalable process for production of monolithic Perovskite solar modules (PSMs). Here we use the doctor blade coating technique assisted by a hot air flow. The basic setup is easy to build and permits to obtain a homogeneous and repeatable deposition of the layers forming the PSM. By applying this fabrication method at ambient condition, we fabricated a low temperature module up to 40 cm2 with a conversion efficiency above 11% and a perovskite layer up to 256 cm2, both based on a pinhole free one-step (without any anti-solvent technique) method, demonstrating the scaling up capability of the optimised process.

Authors

Luigi Vesce, Maurizio Stefanelli, Aldo Di Carlo

https://doi.org/10.1109/ISAECT47714.2019.9069678

2019 International Symposium on Advanced Electrical and Communication Technologies (ISAECT)

 

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