Photosensitive Imagers Having Defined Textures for Light Trapping and Associated Methods
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United States of America Patent
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Issued Date -
Dec 13, 2012
app pub date -
Jun 11, 2012
filing date -
Jun 10, 2011
priority date (Note) -
Abandoned
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Abstract
Photosensitive devices and associated methods are provided. In one aspect, for example, a frontside-illuminated photosensitive imager devices can include a semiconductor substrate having multiple doped regions forming a least one junction and a textured region coupled to the semiconductor substrate and positioned to interact with electromagnetic radiation on an opposite side of the semiconductor substrate from the multiple doped regions. The textured region can include surface features sized and positioned to facilitate tuning to a preselected wavelength of light. The device can also include an electrical transfer element coupled to the semiconductor substrate and operable to transfer an electrical signal from the at least one junction.
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