Study of photodegradation of organic solar cells under brazilian climate conditions




HIGHLIGHTS
  • What: This study investigated the photodegradation and associated loss mechanisms in OPV devices under tropical in Brazil. The primary reasons for the activation and progression of this mechanism are high temperature and elevated solar irradiance. The authors demonstrate that understanding these mechanisms is essential for the development of more sustainable OPVs in tropical climates. Certainly, hybrid organic- inorganic perovskite technologies are currently the primary focus of research.
  • Who: Lucas Phillip Z. G. Moraes and colleagues from the Pontifical Catholic University of Minas Gerais (IPUC), Boulder, CO, USA have published the article: Study of Photodegradation of Organic Solar Cells Under Brazilian Climate Conditions, in the Journal: Energies 2024, 17, x FOR PEER REVIEW of /2024/
  • Future: Investigation into UV exposure and interface integrity is needed to improve OPV module stability in tropical climates.
SUMMARY

    Rapid global population growth and escalating environmental challenges, including climate change and the depletion of essential resources such as water and food, are driving the urgent need for sustainable solutions. The resulting exciton migrates theininterface between absorber material the electron absorber istoused conjunction with an the electron_acceptor, such as and fullerene, which has a molecular energy state that facilitates electron transfer. absorption, the acceptor material. Interest in OPV modules hasextensively been maintained to their competitive cost Interest in OPV modules has been maintained primarily due to their competitive and flexibility in physical and electro-optical formats. Recent advances in machine_learning (ML) and artificial_intelligence (AI) have provided a possible base to rapidly predict structures and compositions that would have suitable lifetimes. Recent advances in machine_learning (ML) and artificial_intelligence (AI) have provided a possible base to rapidly predict structures and compositions that would have suitable lifetimes. This study evaluated the performance and reliability of OPV materials and modules under Brazil`s tropical climatic conditions. A reference module was characterized for comparison, and a characterization module was used to establish the initial compositional and optical properties of the photoactive layer (destructive testing). In the first 30 days, the modules displayed improved electrical parameters, with the maximum power increasing by 5% to 7%. A recent OPV module design with improved encapsulation and UVinhibiting film on the module side exposed to the incoming radiation was tested, showing a significantly lower decrease in power output (none over the same 120-day period and less than 5% over a ~6-month period). Investigation into UV exposure and interface integrity is needed to improve OPV module stability in tropical climates. @@

LAY DEFINITIONS
  • Machine learning: A type of ARTIFICIAL INTELLIGENCE that enable COMPUTERS to independently initiate and execute LEARNING when exposed to new data.
  • Organic photovoltaic: An organic solar cell or plastic solar cell is a type of photovoltaic that uses organic electronics, a branch of electronics that deals with conductive organic polymers or small organic molecules, for light absorption and charge transport to produce electricity from sunlight by the photovoltaic effect. An example of an organic photovoltaic is the polymer solar cell
  • photodegradation: Chemical bond cleavage reactions resulting from absorption of radiant energy.
  • Infrared spectroscopy: Infrared spectroscopy (IR spectroscopy) is the measurement of the interaction of infrared radiation with matter by absorption, emission, or reflection. It is used to study and identify chemical substances or functional groups in solid, liquid, or gaseous forms
  • Scanning electron microscopy: Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons
  • solar energy: Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture and artificial photosynthesis. The large magnitude of solar energy available makes it a highly appealing source of electricity
  • Cells: The fundamental, structural, and functional units or subunits of living organisms. They are composed of CYTOPLASM containing various ORGANELLES and a CELL MEMBRANE boundary
  • Climate: The longterm manifestations of WEATHER. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
  • Energy-dispersive x-ray spectroscopy: The spectrometric analysis of fluorescent X-RAYS, i.e. X-rays emitted after bombarding matter with high energy particles such as PROTONS; ELECTRONS; or higher energy X-rays
  • Artificial intelligence: Theory and development of COMPUTER SYSTEMS which perform tasks that normally require human intelligence. Such tasks may include speech recognition, LEARNING; VISUAL PERCEPTION; MATHEMATICAL COMPUTING; reasoning, PROBLEM SOLVING, DECISION-MAKING, and translation of language

Licence: cc-by

Site reference: https://www.mdpi.com/1996-1073/17/22/5533/pdf?version=1730864324

DOI reference: https://www.doi.org/10.3390/en17225533

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source https://magazine.sciencepod.net/study-of-photodegradation-of-organic-solar-cells-under-brazilian-climate-conditions/

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