@article {Vieira19961193,
	title = {Amorphous and microcrystalline silicon p-i-n optical speed sensors based on the flying spot technique},
	journal = {Journal of Non-Crystalline Solids},
	volume = {198-200},
	number = {PART 2},
	year = {1996},
	note = {<p>cited By 1</p>
},
	pages = {1193-1197},
	abstract = {<p>From the flying spot technique (FST) the ambipolar diffusion length and the effective-lifetime of the carriers photogenerated by a moving light spot that strikes a p-i-n junction can be inferred. In this paper, those properties of a p-i-n junction are used together with an optical triangulation principle to determine the velocity of an object that is moving in the direction of a light source. The light reflected back from the object is analysed through an amorphous or a microcrystalline p-i-n structure. Its transient transverse photovoltage is dependent on the velocity of the object. A comparison between the performances of both kinds of devices is presented.</p>
},
	doi = {10.1016/0022-3093(96)00111-1},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030563421\&partnerID=40\&md5=1f3acdf883c8050ac9d702a04b1cc33f},
	author = {Vieira, M.a , Fantoni, A.a , Koynov, S.a b , Cruz, J.a , Ma{\c c}arico, A.a , Martins, R.a}
}
