摘要:
Devices, systems, and methods for laser processing semiconductor materials are provided. In one aspect, a system for uniformly laser irradiating at least one wafer can include a wafer platter operable to receive and support a one or more wafers, a rotational movement system coupled to the wafer platter, the rotational movement system being operable to rotate the wafer platter in at least one of a clockwise or a counter clockwise direction, and a linear movement system coupled to the wafer platter and operable to move the wafer platter along one or more linear axes. The system can also include a laser source oriented to deliver laser radiation onto a wafer supported by the wafer platter at a fixed angle relative to the surface of the wafer, where the rotational movement system and the linear movement system are operable to maintain the fixed angle across the entirety of the wafer surface.
摘要:
Methods for laser processing semiconductor materials for use in optoelectronic and other devices, including materials, devices, and systems associated therewith are provided. In one aspect, a method of minimizing laser-induced material damage while laser-texturing a semiconductor material can include delivering short pulse duration laser radiation to a target region of a semiconductor material to form a textured region having a reorganized surface layer, wherein the laser radiation has a wavelength from about 200 nm to about 600 nm and a pulse duration of from about 10 femtoseconds to about 400 picoseconds, and wherein defect density of the semiconductor material from beneath the reorganized surface layer up to a depth of about 1 micron is less than or equal to about 1012/cm3.
摘要:
Light trapping pixels, devices incorporating such pixels, and various associated methods are provided. In one aspect, for example, a light trapping pixel device can include a light sensitive pixel having a light incident surface, a backside surface opposite the light incident surface, and a peripheral sidewall disposed into at least a portion of the pixel and extending at least substantially around the pixel periphery. The pixel can also include a backside light trapping material substantially covering the backside surface and a peripheral light trapping material substantially covering the peripheral sidewall. The light contacting the backside light trapping material or the peripheral light trapping material is thus reflected back toward the pixel.
摘要:
Photosensitive semiconductor devices and associated methods are provided. In one aspect, for example, a photosensitive semiconductor device can include an electromagnetic radiation absorption layer having a thickness of less than or equal to about 200 μm, wherein the electromagnetic radiation absorption layer includes a semiconductor material and an enhanced absorption region. The electromagnetic radiation absorption layer is operable to absorb greater than or equal to about 40% of incident electromagnetic radiation having at least one wavelength greater than or equal to about 1064 nm.
摘要:
Light trapping pixels, devices incorporating such pixels, and various associated methods are provided. In one aspect, for example, a light trapping pixel device can include a light sensitive pixel having a light incident surface, a backside surface opposite the light incident surface, and a peripheral sidewall disposed into at least a portion of the pixel and extending at least substantially around the pixel periphery. The pixel can also include a backside light trapping material substantially covering the backside surface and a peripheral light trapping material substantially covering the peripheral sidewall. The light contacting the backside light trapping material or the peripheral light trapping material is thus reflected back toward the pixel.
摘要:
Light trapping pixels, devices incorporating such pixels, and various associated methods are provided. In one aspect, for example, a light trapping pixel device can include a light sensitive pixel having a light incident surface, a backside surface opposite the light incident surface, and a peripheral sidewall disposed into at least a portion of the pixel and extending at least substantially around the pixel periphery. The pixel can also include a backside light trapping material substantially covering the backside surface and a peripheral light trapping material substantially covering the peripheral sidewall. The light contacting the backside light trapping material or the peripheral light trapping material is thus reflected back toward the pixel.