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Viability of 3-D printing semiconductors of Zinc Antimonide in transistors
Our team is trying to develop a way to print a Zinc Antimonide (ZnSb) semiconductor transistor.
- Brief description of the semiconductor material with a link to the manufacturer(s) or suppliers
Benefits of 3D Printing
The core benefit of using the 3D printing approach of electronic device creaton is the flexibility that is inherent to the process. Provided suitable materials and schematics are available it is conceivable to build any combination of devices. The transistor is a small but very potent part of this flexibility. Once a suitable transistor is designed,numerous electronic circuits of interest can be fabricated such as logic gates, amplifying circuits and device control switches. Not only can these devices be created, they can be scaled to suit specific needs.
It would be possible then for a suitably equipped 3D printer to not only be able to print "smart" parts that could electronically interface with each other, but to also build control circuits used to run the printers. Some applications could include building control board for running newer versions of 3D printers that not only handle the operational control functions of running stepper motors and controlling current to the extrusion head, but also sensing capabilities that could be directly integrated into the components used to build the printers. integrating sensing circuits into printed components would allow for feedback signals that could permit higher quality parts to be printed with less waste due to part scrapping.
- A description of how it could be 3D printed
Steps of Synthesizing
Doping the ZnSb with copper will create a p-type material. To do this a combination of heating, quenching, and ball-mill crushing will be implemented. All the granular metals (Zinc, Antimony, and Copper) will be together in a container and placed in a furnace. With the furnace set at 1073K for 24 hours, with the occasional rocking. The granular pieces after the furnace will be left to cool at room temperature. Using a ball-milling machine with an argon atmosphere for 1-1.5 hours to finely crush the granulars, similar to the process in . To get a printable viscosity a process similar to . For this we will use the chemicals α-terpineol and DisperBYK-110. For every 10 grams crushed ZnSb 10 milliliters of α-terpineol will be used and 1 milliliter of DisperBYK-110 and make sure that it is mixed well .
- Create a diagram in Dia outlining your workflow to summarize the steps, and the
equipment, processes, chemicals, steps involved. Show alternate paths and discuss the optimal route and the metrics for choosing it.
- A detailed BOM of the chemicals used to make it with links to sources and prices in a
table - and total cost.
- Outline purification methods and the methods needed to obtain acceptable purity for your
- A description of the testing procedures, equipment and specifications for the equipment
used to determine if you obtained your target compound.
- A list of best in class material properties for your ink.
- Discuss the characterization methods and how they could be adapted for in-situ analysis.
- List and describe applications of this semiconductor if it is printed.
- Make a basic diagram for an electronic device that could use this semiconductor and post
diagram in your project page.
- Design the semiconductor portion of the device in OpenSCAD, paste the code directly
into your project page
- Post the STL of your design and a link to the STL on your project page.
|Alisha Clark||Robert Cooley||Nathaniel Musser||Michel Knuden|
- Heon Bok, “Thermoelectric properties of screen-printed ZnSb film”, Department of Electrical Engineering, Republic of Korea, 2011.