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53 views

What happens to solar cells in water (or in anything other than air)?

Suppose there is a solar cell with light of a single wavelength shining on it (through air) and that this wavelength is optimal for the cell, meaning that it is converted to electricity with the ...
17 views

Feasibility of silicon heterojunction solar cells in utility scale

I came across with the article on a russian website, saying they are planning to start production of solar cells using advanced semiconductor technology called "quantum heterostructure" (maybe in ...
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What parameters decide the maximum concentration achieved by a fresnel lens?

Fresnel lens can be used for concentrating sunlight for Photovoltaic. What parameters of the lens decide the maximum concentration that can be achieved using the lens.
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In a photovoltaic effect, when the electron absorbes the photon, is the electron's energy displaced?

I'm a super amateur wannabe physicist, and I'm trying to learn the fundamental workings of the photovoltaic effect. I haven't been able to understand "how" or "what" is displaced/transmitted in the ...
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How to calculate the potential of a photocell?

My guess is that because the wire is connected to a single point on the plate, we can treat it as a point charge and use the formula: $$V = k\frac{k(\pm q)}{|r|}$$ But I think there are different ...
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Why is Al2O3 so popular in plasmonics?

I've tried to find my own solution for this question and found out that It is cheap It is an insulator It efficiently absorbs UV Are there more properties that makes it so popular?
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“Single-shot” Heat engine efficiency limits

The sun is 5778K and Earth is ~290K. Using the sun as the hot reservoir and earth as a cold reservoir we get 95% Carnot efficiency. However, the solar power efficiency limit is only 86%, see: http://...
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How much energy does a PV cell need to work?

How much energy does a $1m^2$ photovolatic/solar cell need to work? Can it work using a bunch of Laser lights? Edit: Ok so this PV cell is $1m^2$ is dimesions. The N-type has silicon doped with ...
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What is DX technology and what are the effects on digital cameras?

I am photographing in a high power voltage field in Industry producing aluminium, called DX technology. How do I know if my digital camera will not be affected? At 350kA current my film cameras were ...
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Do III-V based photovoltaics “glow” (photo-luminesce) when illuminated but not loaded?

In this nice answer I learned that when the silicon photovoltaics cells on the International Space Station are exposed to the sun, they tend to be cooler when electrically loaded than when no current ...
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What is the purpose of using a Titanium Dioxide layer in a perovskite thin film solar cell?

The top electrode which is made of fluorine doped tin oxide (FTO), itself is a semiconductor. It is generally said that the conduction band(CB) of titanium dioxide aligns well with both perovskite and ...
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Depletion region thickness in solar cells

It is well known that typical Si solar cells are rather thick (hundreds of micrometers). Now, Si has an indirect band-gap and therefore weak optical absorption at low energies (needing a phonon-...
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What is a n-type doped solar cell?

I always thought a solar cell consists of two areas, a n-type and a p-type doped one. So what exactly is meant by n-type doped solar cells? Does it not have a p-type doped area? And how does it work ...
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Working principle of CIGS solar cells

can anybody explain me how CIGS solar cells working.when photon hits the window layer is there any EHP created or ,that buffer layer lets pass photon energy to absorber layer.please explain me by ...