摘要:
Embodiments of the present invention generally relate to solar cells and methods and apparatuses for forming the same. More particularly, embodiments of the present invention relate to thin film multi-junction solar cells and methods and apparatuses for forming the same. Embodiments of the present invention also include an improved thin film silicon solar cell, and methods and apparatus for forming the same, where one or more of the layers in the solar cell comprises at least one amorphous silicon layer that has improved electrical characteristics and mechanical properties, and is capable of being deposited at rates many times faster than conventional amorphous silicon deposition processes.
摘要:
Methods and apparatus for reducing defects on transmitting conducting oxide (TCO) layer are provided. The method includes a method of laser scribing a TCO layer for solar cell applications. In one embodiment, a method for depositing a silicon layer on a transmitting conducting oxide (TCO) layer may include laser scribing a cell-integrated region of a TCO layer disposed on a substrate for solar applications, the TCO layer having a laser scribing free periphery region outward of the cell-integrated region, the periphery region having a width between about 10 mm and about 30 mm measured from an edge of the substrate, transferring the scribed substrate into a deposition chamber, and depositing a silicon containing layer on the TCO layer in the deposition chamber.
摘要:
The present invention generally provides apparatus for supporting a large area substrate in a plasma reactor. One embodiment, a substrate support for using in a plasma reactor includes an electrically conductive body has a top surface with a plurality of roll-formed indents.
摘要:
A method and apparatus having a RF return path with low impedance coupling a substrate support to a chamber wall in a plasma processing system is provided. In one embodiment, a processing chamber includes a chamber body having a chamber sidewall, a bottom and a lid assembly supported by the chamber sidewall defining a processing region, a substrate support disposed in the processing region of the chamber body, a shadow frame disposed on an edge of the substrate support assembly, and a RF return path having a first end coupled to the shadow frame and a second end coupled to the chamber sidewall.
摘要:
Methods for depositing a microcrystalline silicon film layer with improved deposition rate and film quality are provided in the present invention. Also, a photovoltaic (PV) cell having a microcrystalline silicon film is provided. In one embodiment, the method produces a microcrystalline silicon film on a substrate at a deposition rate greater than about 20 nm per minute, wherein the microcrystalline silicon film has a crystallized volume between about 20 percent to about 80 percent.
摘要:
It has been discovered that a parasitic plasma problem which has existed with respect to incoming plasma source gases present in a source gas feed line to a plasma processing chamber can be avoided. The stability of a parasitic plasma is avoided by installing an RF resistor conduit in the source gas feed line and increasing the pressure in the RF resistor conduit through which the plasma source gases flow. Use of a variable surface restrictor in the RF resistor conduit or between the RF resistor conduit and the plasma processing chamber enables not only avoidance of the formation of a parasitic plasma in incoming plasma source gases, but also easier cleaning of the processing chamber plasma generation system when a remotely generated plasma is used for such cleaning.
摘要:
The invention generally relates to a plasma enhanced chemical vapor deposition chamber for depositing amorphous or microcrystalline silicon on a glass substrate to fabricate solar voltaic cells. The chamber includes a backing plate having at least one fluid receiving conduit to receive cooling fluid to remove heat generated within the chamber by the plasma, thereby stabilizing and cooling the backing plate to assure the uniformity of deposition of materials on the surface of the substrate.
摘要:
Methods for depositing a microcrystalline silicon film layer with improved deposition rate and film quality are provided in the present invention. Also, photovoltaic (PV) cell having a microcrystalline silicon film is provided. In one embodiment, the method produces a microcrystalline silicon film on a substrate at a deposition rate greater than about 20 nm per minute, wherein the microcrystalline silicon film has a crystallized volume between about 20 percent to about 80 percent.
摘要:
A method and apparatus for providing an electrically symmetrical ground or return path for electrical current between two electrodes is described. The apparatus includes at least on radio frequency (RF) device coupled to one of the electrodes and between a sidewall and/or a bottom of a processing chamber. The method includes moving one electrode relative to another and realizing a ground return path based on the position of the displaced electrode using one or both of a RF device coupled to a sidewall and the electrode, a RF device coupled to a bottom of the chamber and the electrode, or a combination thereof.
摘要:
The present invention generally comprises a diffuser plate for a PECVD chamber. The diffuser plate comprises a plurality of hollow cathode cavities. The edge of the diffuser plate that will reside closest to a slit valve within a processing chamber may have the shape and/or size of the hollow cathode cavities adjusted to compensate for the proximity to the slit valve. By adjusting the shape and/or size of the hollow cathode cavities closest to the slit valve, the diffuser plate may permit a uniform plasma distribution across the processing chamber and thus, a uniform film thickness upon a substrate during a PECVD process.