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Evidently, the solar resource contains enough energy to cover those demands. However, the critical limitations in solar energy conversion will be the efficiency of existing technologies and availability of earth materials to scale up those conversion devices. What's in solar spectrum?
Therefore, solar energy can be used as an existing context in the teaching of energy concepts to provide a good opportunity to improve the quality of teaching, promote learning and increase students' creativity.
The concepts of energy and energy conversion in solar energy are in the national curriculum of Iran in the ninth-grade, so the study conducted in this research was done in the ninth-grade. The research sample was available to the school as a sample and included four science classrooms from the ninth-grade (14.83± 0.53 years old).
One of the most important topics in science education is energy education, and STEM is a new approach that can be used for energy education. Solar energy was used as a suitable context in STEM-based energy education to investigate its impact on the learning and creativity of female students.
Solar energy is electromagnetic radiation. The most solar radiation reaching the earth surface is essentially in the wave length range λ 290 − 2500 λ 290 − 2500 nm. Quantum (unit energy) of electromagnetic radiation - photon (E = hv) - is often a more convenient term in the mechanism of solar conversion. Figure 1.1.
Before considering various types of conversion of solar energy, let us briefly review what solar radiation actually is. Here are a few main things we know from physics: Solar energy is electromagnetic radiation. The most solar radiation reaching the earth surface is essentially in the wave length range λ 290 − 2500 λ 290 − 2500 nm.
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Fig. 8.1 shows a simple diagram of how a conventional photovoltaic device works. The top and bottom layers are made of an n-doped and p-doped silicon, where the charge of the mobile carriers is negative (electrons) or positive (holes), respectively. The p-doped silicon is made by ''doping'' traces of an electron-poor element such as gallium into pure silicon, …
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Get Price >>Quantum solar energy conversion implies the transformation of the energy carried by the electromagnetic wave into a usable form of energy: work, electrical-, or chemical energy (not …
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Get Price >>Harriman A (2013) Prospects for conversion of solar energy into chemical fuels: the concept of a solar fuels industry. Phil Trans R Soc A 371:20110415. Article Google Scholar MacKay DJC (2013) Solar energy in the context of energy use, energy transportation and energy storage. Phil Trans R Soc A 371:20110431
Get Price >>This concise primer on photovoltaic solar energy conversion invites readers to reflect on the conversion of solar light into energy at the most fundamental level and encourages newcomers to the field to help find meaningful answers on …
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Get Price >>9.2 Thermodynamic limitation of power conversion efficiency Quantum solar energy conversion implies the transformation of the energy carried by the electromagnetic wave into a usable form of energy: work, electrical-, or chemical energy (not heat). The conversion efficiency η is thus defined as the ratio of the converted Gibbs energy ΔG
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Get Price >>Principles and design of solar energy conversion systems. Quantity and availability of solar energy. Physics and chemistry of solar energy conversion: solar optics, optical excitation, capture of excited energy, and transport of excitations or electronic charge. Conversion methods: thermal, wind, photoelectric, photoelectrochemical, photosynthetic,
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