Materials in harnessing solar power

Kumar, Marka Sandeep; Nagavolu, Charanadhar; Srikanth, Vadali Venkata Satya Siva; Rao, K. Bhanu Sankara; Raj, Baldev

doi:10.1007/s12034-018-1554-x

Cited by 12 publications

(5 citation statements)

References 67 publications

(65 reference statements)

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“…Furthermore, these organic-inorganic hybrid perovskite materials are also compatible with facile, thermal budget and eco-benign fabrication techniques [8,11]. Kumar et al [12] have previously confirmed that the fabrication of organicinorganic perovskite solar cells is easy and cost-effective compared to the conventional Si-based solar cells. Based on these aforementioned unique properties and intensive worldwide cumulative R&D efforts, the power conversion efficiencies (PCE) of perovskite solar cells have skyrocketed from 3 to 23%, within a time-frame of 6 years [13][14][15].…”

Section: Introductionmentioning

confidence: 88%

A study of electromagnetic light propagation in a perovskite-based solar cell via a computational modelling approach

2019

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Recently, there has been huge surge of scientific interest in organic-inorganic hybrid perovskite solar cells by virtue of their high efficiency and low cost fabrication procedures. Herein, we examine the light propagation inside a planar perovskite solar cell structure (ITO/TiO 2 /ZnO/CH 3 NH 3 PbI 3 /Spiro-OMeTAD/Al) by solving the Helmholtz equation in the finite element-frequency domain. The simulations were conducted using the COMSOL multiphysics finite element solver to carry out the two-dimensional optical modelling of simulated solar cells in the visible region. It has been observed that shorter wavelengths of light are significantly absorbed by the top region of the photoactive perovskite layer. Specifically, at a wavelength of 400 nm, the effective optical power penetration decays to zero at only 40% of the overall length of the photoactive layer. This observation has been attributed to the high absorption coefficient of the CH 3 NH 3 PbI 3 perovskite material at shorter wavelengths. However, at longer wavelengths, the incident light propagates deeper into the photoactive layer, reaching 100% penetration. Based on the numerical computation, a maximum generation rate of ∼3.43 × 10 23 m 3 s −1 has been observed in the photoactive layer at a wavelength of 550 nm.

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Section: Introductionmentioning

confidence: 88%

A study of electromagnetic light propagation in a perovskite-based solar cell via a computational modelling approach

2019

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“…As the most abundant energy resource, the amount of solar energy received by earth annually is approximately 1.8*10 11 MW, which is far more than the current total annual energy consumption of the human world. [5][6] Current exploration of solar energy utilization mainly focuses on the conversion of solar energy into electricity through photovoltaic devices or into chemical energy. The electricity energy converted from solar energy requires immediate storage or use and thus the application conditions are relatively strict.…”

Section: Introductionmentioning

confidence: 99%

Biohybrid Molecule‐Based Photocatalysts for Water Splitting Hydrogen Evolution

Zheng

Han

2023

ChemPlusChem

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The problems of resource depletion and environmental pollution caused by the excessive use of fossil fuels greatly restrict the rapid development of human technology and industry, which has led to a high demand for the development of new and clean energy sources. Hydrogen, due to its high calorific value and environmentally friendly combustion products, is undoubtedly a very promising energy carrier. The current methods of industrial hydrogen production are mainly water electrocatalytic decomposition or fossil fuels conversion, which also results in the waste of other energy sources. Since only one-step is involved during the conversion from solar to chemical energy and thus unnecessary energy waste is avoided, solar energy photocatalytic decomposition of water provides a more viable method for hydrogen production. The utilization of biohybrid molecules, which are widely available in nature and environmentally friendly, further reduce the cost of such photocatalytic systems. This Review discusses the research progress on hydrogen production using biohybrid molecules for photocatalytic hydrogen evolution. The basic reaction mechanism, general types and system structures about biohybrid molecule-based photocatalysts are summarized. The current challenges and prospects in the research of water splitting hydrogen evolution by biohybrid molecules photocatalysts are presented.

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“…Owing to the adverse effects of fossil fuels on the global environment, the field of clean energy production is critical to the future of the planet. Therefore, it is very necessary to use existing natural resources to produce clean energy. − The annual total solar radiation in China ranges from 3.35 to 8.40 kJ m –2 , with an average of 5.86 kJ m –2 , and solar technology is expected to provide about 70% of global energy consumption by 2100. − China, the United States, and Germany are the top three countries in the world for installed wind power capacity, respectively accounting for 35%, 17%, and 10% of the world’s total wind power capacity . The utilization of wind energy includes wind power generation, wind water lifting, and sail aid, etc. − Geothermal energy is a large amount of heat energy produced by the radioactive decay of the Earth.…”

Section: Introductionmentioning

confidence: 99%

Principles and Materials of Mixing Entropy Battery and Capacitor for Future Harvesting Salinity Gradient Energy

Zhou

Zhang

Han

et al. 2022

ACS Appl. Energy Mater.

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The salinity gradient energy, also known as "blue energy", widely exists at the junction of river water and seawater, which is a promising renewable energy. When two solutions with different salt concentrations are mixed, they will spontaneously release energy. The blue energy is in the form of chemical energy. The available salinity gradient energy all over the world is huge, so the study of it is of great significance. In this review, various techniques and their principles for obtaining salinity gradient energy are reviewed, and the mixing entropy battery (MEB) technique is introduced in detail. The MEB can not only extract but also store electrochemical energy through a simple four-step cycle. We focus on the principles of MEB and the calculation of energy consumption during the process of mixing, as well as the anode materials, cathode materials, and natural electrolyte used in MEB. The electrolyte of the mixing entropy battery or capacitor is not limited to river and seawater; salt-lake brine, geothermal water, and urban wastewater can also be used, but further research is needed.

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Materials in harnessing solar power

Cited by 12 publications

References 67 publications

A study of electromagnetic light propagation in a perovskite-based solar cell via a computational modelling approach

A study of electromagnetic light propagation in a perovskite-based solar cell via a computational modelling approach

Biohybrid Molecule‐Based Photocatalysts for Water Splitting Hydrogen Evolution

Principles and Materials of Mixing Entropy Battery and Capacitor for Future Harvesting Salinity Gradient Energy

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