Micro-CT of an Electronic Organic Resistor

Semiconductor and electronics manufacturers are continually introducing new processing technologies and materials in order to make devices smaller, faster, cheaper, and more efficient. With decreasing length scales and the challenges of introducing new materials, new characterization techniques are required to develop next-generation materials and validate new processes. Micro-CT is well suited for examination of organic electronic devices, particularly for product development, failure analysis, and as an alternative to destructive sampling of these types of components.

Innovative design tools and processing methods are broadening the range of applications for organic electronic devices, including organic resistors. For our study this month, we utilized our SkyScan 1272 high resolution desktop micro-CT to examine an organic electronic resistor.

Figure 2: Volumetric rendering of pores highlighted in red within the organic layer

 

Figure 3: Mounted organic resistor imaged for this study

Micro-CT Scan of an Organic Resistor

Our micro-CT examination of an organic composition style electronic resistor allows us to investigate the conductive particles distributed throughout the matrix. As can be seen in Figure 1, the organic resistive material is sandwiched between two metal cups affixed to axial wire leads and the entire assembly is coated in a low density film.

The normal function of the resistor lies in controlling the flow of electrons through circuits. By using an organic material, most commonly carbon with other conductive particles, engineers can carefully tailor the electronic transport properties of the device to meet specified values within acceptable tolerances. Over time with regular use, resistors may degrade in function and these changes may be possible to monitor through micro-CT examination. In this case, we examined a new resistor to look at the prevalence of voids within the packed organic layer.

During the manufacturing process, voids may form in the organic layer if the manufacturing conditions or materials are not optimized. Voids in the fill will affect the performance of the device and therefore warrant study. As can be seen in Figure 2, there are relatively few pores throughout the organic layer with most near the top or bottom of the organic cylinder. The total porosity was calculated to be 0.01% for this sample and no clear pattern of pore formation is observed.

In reviewing the porosity data in greater detail, we see that the pore size distribution is narrow with most pores on the order of 5-15 micrometers in diameter. Less than 10% of the total pores identified have a diameter exceeding this value and no pores were observed with a diameter exceeding 25 micrometers.

Figure 4: Calculated pore diameter ranges based on total pore volume

Conclusion

Micro-CT is particularly useful in electronics manufacturing, especially for product development, manufacturing optimization, and failure analysis. We hope you found this Image of the Month informative. If you have an Image of the Month sample that you would like us to scan, please contact us by calling Seth Hogg at 610-366-7103 or e-mailing seth.hogg@microphotonics.com

Scan Specifications

Sample Resistor
Voltage (kV) 100
Current (µA) 100
Pixel Size (µm) 5
Rotation Step 0.25
Scan Time (HH:MM:SS) 05:31:55

This scan was completed on our high resolution desktop SkyScan 1272 system at the Micro Photonics Imaging Laboratory in Allentown, PA. Reconstructions were completed using NRecon and visualization of 2D and 3D results were completed using DataViewer and CTVox.

 

 

Related Products

Related Articles

Call Now Button

Coming Soon:

Customer access to tips and instructional videos, method notes, tutorials, application notes, and other content to support your research.

Employment

While we are not currently looking to fill a specific position at Micro Photonics, if helping others advance their research is something you are passionate about, then feel free to send us your resume so that we can keep it for further considerations when a position does become available.

Please submit resumes to: info@microphotonics.com

Micro Photonics Inc.
1550 Pond Road, STE 110
Allentown, PA 18104

Events

Due to Covid-19 restrictions, we will not be attending tradeshows in the near future. We are participating in webinars and virtual tradeshows and will post links to those as they are available.

Privacy Policy

What information do we collect? We collect information from you when you register on our site, place an order, subscribe to our newsletter or fill out a form. When ordering or registering on our site, as appropriate, you may be asked to enter your: name, e-mail address, mailing address, phone number or credit card information. You may, however, visit our site anonymously.
What do we use your information for? Any of the information we collect from you may be used in one of the following ways:

; To personalize your experience (your information helps us to better respond to your individual needs).

; To improve customer service (your information helps us to more effectively respond to your customer service requests and support needs).

; To process transactions. Your information, whether public or private, will not be sold, exchanged, transferred, or given to any other company for any reason whatsoever, without your consent, other than for the express purpose of delivering the purchased product or service requested.

; To send periodic emails .The email address you provide for order processing, will only be used to send you information and updates pertaining to your order.Note: If at any time you would like to unsubscribe from receiving future emails, we include detailed unsubscribe instructions at the bottom of each email.

Terms and Conditions

Terms of Service for www.microphotonics.com

Introduction. Welcome to www.microphotonics.com. This website is owned and operated by Micro Photonics Inc. By visiting our website and accessing the information, resources, services, products, and tools we provide, you understand and agree to accept and adhere to the following terms and conditions as stated in this policy (hereafter referred to as ‘User Agreement’), along with the terms and conditions as stated in our Privacy Policy (please refer to the Privacy Policy section below for more information).

This agreement is in effect as of October 25, 2018.

We reserve the right to change this User Agreement from time to time without notice. You acknowledge and agree that it is your responsibility to review this User Agreement periodically to familiarize yourself with any modifications. Your continued use of this site after such modifications will constitute acknowledgment and agreement of the modified terms and conditions.

Responsible Use and Conduct. By visiting our website and accessing the information, resources, services, products, and tools we provide for you, either directly or indirectly (hereafter referred to as ‘Resources’), you agree to use these Resources only for the purposes intended as permitted by (a) the terms of this User Agreement, (b) the terms of any applicable confidentiality, non-disclosure, or other agreement between you and a third party, and (c) applicable laws, regulations and generally accepted online practices or guidelines.

US Partner Form