Postdoc- Multiscale Optical and Scanning Probe of Integrated Semiconductor Interfaces

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.