The dragonscale detector uses basic solar cell physics to create a signal just from the x rays and gamma rays.
Solar cell gamma radiation detector.
Oct 11 2011 3 logannc.
There is much difference between a gamma ray and optical light as there is to radio waves.
Solar cells are known to react to x rays and or gamma rays impinging on them.
Normally the signal caused by x rays or gamma rays in the solar cell output is miniscule compared to the signal that is created by visible light.
A number of pin photodiodes phototransistors and solar panels have been exposed to gamma irradiation.
The characteristics of a 25 4 x 91 cm solar cell panel used as an x ray and gamma ray radiation monitor are presented.
However as an indirect band semiconductor silicon has relatively low.
They were discovered by victor hess in 1912 in balloon experiments.
I v characteristics current dependance on voltage of these devices have been measured before and after irradiation.
However i would think that if it were possible to absorb a significant amount given a thick enough cell then the energy absorbed might.
Direct measurement of cosmic rays especially at lower energies has become possible since the launch of the first satellites in.
Silicon solar cells of n pp or n pp structures are widely used as solar radiation detector 6 and gamma dosimeter 7 8.
Monocrystalline silicon solar cell of the construction n pp passivated emitter solar cell pesc irradiated by 60 co gamma ray dose was studied.
Cosmic rays are high energy protons and atomic nuclei which move through space at nearly the speed of light they originate from the sun from outside of the solar system and from distant galaxies.
And other novel approaches.
These are first and foremost light emitting diodes and lasers operating in the near ir and visible regions optical filters solar cells x ray and gamma radiation detectors and high sensitivity electrooptical sensors for coherent detection at frequencies above 30 thz 1.
Although both a solar cell and photo diode are essentially a pn junction there construction and the way they are used is vastly different almost opposite.
Lead free perovskites with lead replaced by tin.
One of the problems is that while visible light will easily be asborbed in a thin layer on a solar cell gamma radiation will easily penetrate large layers of shielding.
Thermoluminescence detectors tld main dosimetry peak was investigated.
This paper presents the behavior of various optoelectronic devices after gamma irradiation.
Our group is also investigating tandem solar cells with perovskite and silicon solar cells.
So the method of measurement is as vastly different.
The results showed that it is possible to determine gamma dose more accurate from tl main dosimetry peak for monocrystalline silicon solar cell in comparison with tld 100.
