Black phosphorus thin films for SWIR photodetectors

In recent years, short-wave infrared (SWIR) technologies have gained traction in various fields, including healthcare, agriculture, security (such as face recognition and surveillance), automotive, machine vision, and virtual reality (VR). Among the leading technologies for SWIR detection are photodetectors based on quantum-dot (QD) thin films, valued for their cost-effective, high-resolution performance and tunability to specific wavelengths. However, these QDs often contain lead or other heavy metals, which pose significant health risks. Additionally, QD thin films are limited by low mobilities and the presence of organic ligands, which limits the response time of the devices. As a result, developing heavy metal-free alternatives for SWIR sensors is crucial to addressing these concerns and advancing efficient, tunable, and environmentally friendly imaging technologies. We propose the use of black phosphorus (bP) as the active layer for this new generation devices. As a layered material, bP allows precise thickness control from monolayer to bulk. Its high mobility and clean interfaces can lead to faster device performance compared to current QD-based technologies. 
 
The goal of the internship/master’s thesis project is to explore and develop black phosphorus-based thin absorbers for SWIR wavelengths and integrate them in photodetectors. Layered bP thin films will be produced via an ink process, with their thickness determined by the material's optical properties, as the bP bandgap is tunable by the number of layers. After a short period of training, the selected candidate will be able to work independently in a lab environment.  Student will learn to fabricate and characterize devices and feedback will be used to optimize their performance. On top of that, the candidate will gain experience in a wide variety of optical, structural, and electrical measurements. An international team of experienced researchers will be present to provide continuous support and guidance. The ideal candidate is a hands-on person in a lab environment, with a proven record of problem-solving and data analysis. Given the international character of imec, an excellent knowledge of English is a prerequisite. 
For more information or application, please contact Isabel Pintor (Isabel.pintormonroy@imec.be)

Type of Project: Combination of internship and thesis; Thesis; Internship 

Master's degree: Master of Engineering Technology; Master of Science; Master of Engineering Science 

Master program: Materials Engineering; Nanoscience & Nanotechnology; Chemistry/Chemical Engineering; Physics 

Duration: 6-9 months 

Supervisor: Jan Genoe (EE, Nano) 

For more information or application, please contact Isabel Pintor Monroy (isabel.pintormonroy@imec.be).

Imec allowance will be provided for students studying at a non-Belgian university.