Category Archives: Uncategorized

Photoresist Stripping in Semiconductor Processing

Semiconductor processing involves numerous critical steps, and one of the most important is photoresist stripping. This step requires careful attention because it ensures that the temporary masking layer used during patterning is fully removed without damaging the underlying structures and without leaving any residue behind. What is Photoresist Stripping? Photoresist stripping is the process ofContinue reading “Photoresist Stripping in Semiconductor Processing”

Diffusion

Let´s talk about diffusion! The diffusion is present in many semiconductor manufacturing steps. According to the semiconductor manufacturing step, the diffusion can be done with several materials and with different depths and surface concentrations. Diffusion is a two-step process: deposition and drive-in. The first one was already discussed in my previous post. Today I willContinue reading “Diffusion”

Oxidation

What is oxidation ? Oxidation is a process where an atom, molecule or ion loses one or more electrons in a chemical reaction. The first known oxidizing agent was the oxygen. Oxidation´s processes are used in many industries for several purposes. As an example, we have the heat sink anodizing process, where an oxide isContinue reading “Oxidation”

Green-Semiconductor: the new generation

I´ve been reading a lot about the planet, and among all problems, pollution is one of great impact. The truth is that this makes me feel sad. Why we human beings, are responsible for destroying our loved home the Earth? Why don´t we use our wisdom to avoid collapsing our planet? Who said that highContinue reading “Green-Semiconductor: the new generation”

Wafer Doping – Deposition

The second, but not less important semiconductor process step, is the wafer doping. The purpose here is to explore the techniques used to growth/deposit films on the wafer surface as a drive-in diffusion pre-step, i.e., the films used as a dopants source with the objective of modify the physical, chemical, or electronic properties of theContinue reading “Wafer Doping – Deposition”

Wafer Surface Cleaning

If we observe simple details in day-to-day events, we will see how many times surface cleaning is present in several activities. Every surface coating, before coating is cleaned, and if it isn`t done correctly in some way it will appear. Cleaning surface is a production step used in several industries: automotive, electroplating, glass, polymers, andContinue reading “Wafer Surface Cleaning”

Schematic Process for Manufacturing Power Semiconductor Devices

I understand that to improve a device characteristic we must know all the manufacturing processes. This is the way we can observe the influence between each process step and its results. As an example, I chose to use a simple power semiconductor device process, that has the same concepts for other semiconductor devices. The ideaContinue reading “Schematic Process for Manufacturing Power Semiconductor Devices”

Manufacturing Costs

For a semiconductor industry there are a lot of costs that should be well reviewed before implementing any project. Imagine the following situation, there is a huge addressable market for your product, there are competitors, and you need to beat them to be profitable. What can you offer to make that happen? That´s a questionContinue reading “Manufacturing Costs”

Different Semiconductor Technologies – Power Semiconductor devices x MOS technology devices

Hi! Today I invite you to participate of this post, because I will compare different semiconductor technologies based in their characteristics and manufacturing processes. I think a good starting point is to divide the semiconductor in this post in two groups: power semiconductors devices and digital or mixed-signal devices. In the first group I willContinue reading “Different Semiconductor Technologies – Power Semiconductor devices x MOS technology devices”