Postdoc- Multiscale Optical and Scanning Probe of Integrated Semiconductor Interfaces

Oak Ridge National Laboratory; Oak Ridge (TN); On-site; USD 55,000 - 70,000; Full time

Job summary

Oak Ridge National Laboratory's CNMS invites applications for a Postdoctoral Research Associate to develop and apply multiscale excitonic probes using scanning probe microscopy on buried interfaces in semiconductor structures.

The role integrates PiFM, photoluminescence, and electroluminescence spectroscopy with complementary techniques to elucidate interface physics and defects in low-dimensional materials, advancing next-generation devices.

Qualifications

• A PhD in materials science and engineering, physics, chemistry, electrical engineering, or a related field completed within the last 5 years
• Background in optical spectroscopy, scanning probe microscopy, semiconductor materials, or condensed matter physics preferred.
• Experience with nanoscale optical spectroscopy and AFM-based techniques is advantageous.

Responsibilities

• Design and conduct experiments combining nanoscale photonics, optical spectroscopy, and scanning probe microscopy.
• Advance capabilities for specialized scanning probe microscopy methods
• Collaborate across CNMS, ORNL, and NSRC to connect local chemical, structural, optical, and electronic properties.
• Present and report research results and publish in peer-reviewed journals.

Skills

Nanoscale optical spectroscopy

Scanning probe microscopy

Two-dimensional materials

Semiconductor materials

AFM surface characterization

Raman spectroscopy

Python

MATLAB

Education

PhD in materials science and engineering, physics, chemistry, or electrical engineering

Tools

Python

MATLAB

Job description

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Postdoc- Multiscale Optical and Scanning Probe of Integrated Semiconductor Interfaces

We are seeking a Postdoctoral Research Associate to use advanced scanning probe microscopy for the development and application of multiscale excitonic probes. In this role, you will study buried interfaces, defects, and charge-transfer processes in vertically integrated semiconductor structures. The research will focus on low-dimensional and emerging materials incorporated into complex microelectronic and optoelectronic architectures, with particular emphasis on interfaces between two-dimensional and conventional semiconductor materials. This position resides in the Functional Atomic Force Microscopy (FAFM) group in the Nanomaterials Characterization Section, Center for Nanophase Materials Sciences (CNMS), Physical Science Directorate (PSD) at Oak Ridge National Laboratory (ORNL) and you will join our team as part of the Department of Energy’s Nanoscale Science Research Center MEERCAT project.

As part of our research team, you will investigate excitonic and electronic behavior across multiple length and time scales using a combination of photoinduced force microscopy (PiFM), photoluminescence, and electroluminescence spectroscopy. These measurements will be correlated with complementary techniques such as Kelvin probe force microscopy, scanning microwave impedance microscopy, cathodoluminescence, Raman spectroscopy, and electron microscopy to connect local chemical, structural, optical, and electronic properties. The research will contribute to the development of multiscale characterization strategies for understanding interfaces and defects that affect the performance of next-generation semiconductor devices. The candidate will collaborate with researchers across CNMS, ORNL, and the broader NSRC network working in materials synthesis, device fabrication, theoretical modeling, and complementary characterization.

We are particularly interested in candidates with backgrounds in optical spectroscopy, scanning probe microscopy, semiconductor materials, or condensed matter physics who are motivated to work across disciplinary boundaries and develop new experimental capabilities.

Major Duties/Responsibilities:

• Design and conduct experiments combining nanoscale photonics, optical spectroscopy, and scanning probe microscopy.
• Advance capabilities for specialized scanning probe microscopy methods
• Work as part of a dynamic team conducting research that advances and develops cutting-edge characterization capabilities to improve our understanding of interfaces and defects in low-dimensional heterostructures.
• Present and report research results and publish scientific results in peer-reviewed journals in a timely manner.
• Ensure compliance with environment, safety, health and quality program requirements.
• Maintain strong commitment to the implementation and perpetuation of values and ethics.
• Deliver ORNL’s mission by aligning behaviors, priorities, and interactions with our core values of Impact, Integrity, Teamwork, Safety, and Service. Promote equal opportunity by fostering a respectful workplace – in how we treat one another, work together, and measure success.

Basic Qualifications:

• A PhD in materials science and engineering, physics, chemistry, electrical engineering, or a related field completed within the last 5 years

Preferred Qualifications:

• Research experience or demonstrated knowledge in at least one of the following areas:
• Nanoscale optical spectroscopy, including photoluminescence, electroluminescence, cathodoluminescence, or near-field optical microscopy such as SNOM.
• Two-dimensional or other low-dimensional materials.
• Semiconductor or microelectronics-relevant materials and devices.
• Proficiency in surface and interface characterization using atomic force microscopy.
• Experience in materials characterization techniques such as Raman and scanning electron microscopy.
• Data analysis skills using Python, MATLAB, or similar platforms.
• Excellent written and oral communication skills.
• Motivated self-starter with the ability to work independently and to participate creatively in collaborative teams across the laboratory.
• Ability to function well in a fast-paced research environment, set priorities to accomplish multiple tasks within deadlines, and adapt to ever changing needs.

Security, Credentialing, and Eligibility Requirements:

For employment at Oak Ridge National Laboratory (ORNL), a Real ID compliant form of identification will be required. Additionally, ORNL is subject to Department of Energy (DOE) access restrictions. All employees must also be able to obtain and maintain a federal Personal Identity Verification (PIV) card as mandated by Homeland Security Presidential Directive 12 (HSPD-12) and Department of Energy (DOE) Order 473.1A, which requires a favorable post-employment background investigation.
To obtain this credential, new employees must successfully complete and pass a Federal Tier 1 background check investigation. This investigation includes a declaration of illegal drug activities, including use, supply, possession, or manufacture within the last year. This includes marijuana and cannabis derivatives, which are still considered illegal under federal law, regardless of state laws.
For foreign national candidates:
If you have not resided in the U.S. for three consecutive years, you are not eligible for the PIV credential and instead will need to obtain a favorable Local Site Specific Only (LSSO) risk determination to maintain employment. Once you meet the three-year residency requirement, you will be required to obtain a PIV credential to maintain employment.

Postdocs:

Applicants cannot have received their Ph.D. more than five years prior to the date of application and must complete all degree requirements before starting their appointment. The appointment length will be up to 24 months with the potential for extension. Initial appointments and extensions are subject to performance and availability of funding.

About ORNL:

As a U.S. Department of Energy (DOE) Office of Science national laboratory, ORNL has an impressive 80-year legacy of addressing the nation’s most pressing challenges. Our team is made up of over 7,000 dedicated and innovative individuals! Our goal is to create an environment where a variety of perspectives and backgrounds are valued, ensuring ORNL is known as a top choice for employment. These principles are essential for supporting our broader mission to drive scientific breakthroughs and translate them into solutions for energy, environmental, and security challenges facing the nation.

ORNL offers competitive pay and benefits programs to attract and retain individuals who demonstrate exceptional work behaviors. The laboratory provides a range of employee benefits, including medical and retirement plans and flexible work hours, to support the well‑being of you and your family. Employee amenities such as on‑site fitness, banking, and cafeteria facilities are also available for added convenience.

Other benefits include the following: Prescription Drug Plan, Dental Plan, Vision Plan, 401(k) Retirement Plan, Contributory Pension Plan, Life Insurance, Disability Benefits, Generous Vacation and Holidays, Parental Leave, Legal Insurance with Identity Theft Protection, Employee Assistance Plan, Flexible Spending Accounts, Health Savings Accounts, Wellness Programs, Educational Assistance, Relocation Assistance, and Employee Discounts.

If you have difficulty using the online application system or need an accommodation to apply due to a disability, please email: [e-mail].

This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.

We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.

ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply. UT‑Battelle is an E‑Verify employer.