摘要:
A method and apparatus for forming solar cells is provided. In one embodiment, a photovoltaic device includes a first TCO layer disposed on a substrate, a second TCO layer disposed on the first TCO layer, and a p-type silicon containing layer formed on the second TCO layer. In another embodiment, a method of forming a photovoltaic device includes forming a first TCO layer on a substrate, forming a second TCO layer on the first TCO layer, and forming a first p-i-n junction on the second TCO layer.
摘要:
Embodiments of the present invention relate to methods for forming a doped amorphous silicon oxide layer utilized in thin film solar cells. In one embodiment, a method for forming a doped p-type amorphous silicon containing layer on a substrate includes providing a substrate in a processing chamber, supplying a gas mixture having a hydrogen-based gas, a silicon-based gas and a carbon and oxygen containing gas into the processing chamber, the gas mixture having a volumetric flow ratio of the hydrogen-based gas to the silicon-based gas between about 5 and about 15, wherein a volumetric flow ratio of the carbon and oxygen containing gas to the total combined flow of hydrogen-based gas and the silicon-based gas is between about 10 percent and about 50 percent; and maintaining a process pressure of the gas mixture within the processing chamber at between about 1 Torr and about 10 Torr while forming a doped p-type amorphous silicon containing layer.
摘要:
The present invention generally relates to a system that can be used to form a photovoltaic device, or solar cell, using processing modules that are adapted to perform one or more steps in the solar cell formation process. The automated solar cell fab is generally an arrangement of automated processing modules and automation equipment that is used to form solar cell devices. The automated solar fab will thus generally comprise a substrate receiving module that is adapted to receive a substrate, one or more absorbing layer deposition cluster tools having at least one processing chamber that is adapted to deposit a silicon-containing layer on a surface of the substrate, one or more back contact deposition chambers, one or more material removal chambers, a solar cell encapsulation device, an autoclave module, an automated junction box attaching module, and one or more quality assurance modules that are adapted to test and qualify the completely formed solar cell device.
摘要:
Embodiments of the present invention generally relate to methods of forming a microcrystalline silicon layer on a substrate in a deposition chamber. In, one embodiment, the method includes flowing a processing gas into a diffuser region between a backing plate and a showerhead of the deposition chamber, flowing the processing gas through a plurality of holes in the showerhead and into a process volume between the showerhead and a substrate support in the deposition chamber, igniting a plasma in the process volume, back-flowing gas ions formed in the plasma through the plurality of holes in the showerhead and into the diffuser region, mixing the gas ions and the processing gas in the diffuser region, re-flowing the gas ions and processing gas through the plurality of holes in the showerhead and into the process volume, and depositing a microcrystalline silicon layer on the substrate.
摘要:
A method and apparatus for forming solar cells is provided. In one embodiment, a photovoltaic device includes a antireflection coating layer disposed on a first surface of a substrate, a barrier layer disposed on a second surface of the substrate, a first transparent conductive oxide layer disposed on the barrier layer, a conductive contact layer disposed on the first transparent conductive oxide layer, a first p-i-n junction formed on the conductive contact layer, and a second transparent conductive oxide layer formed on the first p-i-n junction.
摘要:
A method and apparatus for forming solar cells is provided. Doped crystalline semiconductor alloys including carbon, oxygen, and nitrogen are used as charge collection layers for thin-film solar cells. The semiconductor alloy layers are formed by providing semiconductor source compound and a co-component source compound to a processing chamber and ionizing the gases to deposit a layer on a substrate. The alloy layers provide improved control of refractive index, wide optical bandgap, high conductivity, and resistance to attack by oxygen.
摘要:
A method and apparatus for forming solar cells is provided. In one embodiment, a photovoltaic device includes a first TCO layer disposed on a substrate, a second TCO layer disposed on the first TCO layer, and a p-type silicon containing layer formed on the second TCO layer. In another embodiment, a method of forming a photovoltaic device includes forming a first TCO layer on a substrate, forming a second TCO layer on the first TCO layer, and forming a first p-i-n junction on the second TCO layer.
摘要:
Embodiments of the present invention may include an improved thin film solar cell device that is formed by sequentially depositing an intrinsic amorphous silicon layer and an intrinsic microcrystalline silicon layer during the p-i-n or n-i-p junction formation process. Embodiments of the invention also generally provide a method and apparatus for forming the same. The present invention may be used to advantage to form other single junction, tandem junction, or multi-junction thin film solar cell devices.
摘要:
The present invention generally comprises a method for dynamically controlling the temperature of a solar cell substrate during microcrystalline silicon deposition. In amorphous silicon/microcrystalline tandem solar cells, microcrystalline silicon may be deposited using a higher power density and to a greater thickness than amorphous silicon. The higher the power density applied, the faster the deposition may occur, but the temperature of the deposition may also increase. At high temperatures, the likelihood of dopant diffusing into the intrinsic layer of the solar cell and damaging the cell is greater. By dynamically controlling the temperature of the susceptor, the substrate and hence, the dopant can be maintained at a substantially constant temperature below the value at which the dopant may diffuse into the intrinsic layer. The dynamic temperature control permits the microcrystalline silicon to be deposited at a high power density without damaging the solar cell.
摘要:
Embodiments of the invention as recited in the claims relate to thin film multi-junction solar cells and methods and apparatuses for forming the same. In one embodiment a method of forming a thin film multi-junction solar cell over a substrate is provided. The method comprises positioning a substrate in a reaction zone, providing a gas mixture to the reaction zone, wherein the gas mixture comprises a silicon containing compound and hydrogen gas, forming a first region of an intrinsic type microcrystalline silicon layer on the substrate at a first deposition rate, forming a second region of the intrinsic type microcrystalline silicon layer on the substrate at a second deposition rate higher than the first deposition rate, and forming a third region of the intrinsic type microcrystalline silicon layer on the substrate at a third deposition rate lower than the second deposition rate.