Document Type : Research

Authors

• Mohammad Sadeq Akhoundi Khezrabad ¹
• Maryam masoudi ²
• Ali Asghar Shokri ³
• Sedigheh Choubineh ⁴

¹ Department of Physics, Faculety of basic science, Payame noor Universiity, Tehran, IRan

² 2. PhD, Department of Physics, Payam Noor University, Tehran, Iran

³ Department of Theoretical and NanoPhysics, Faculty of Physics, Alzahra University, Tehran, Iran

⁴ 4. Education in Jam County, Bushehr Province, Iran

Abstract

In this study, the temperature-dependent optical response of a nitrogen- and boron-doped armchair-10 graphene nanoribbon (10-AGNR) is investigated using density functional theory (DFT) calculations. The research aims to evaluate the feasibility of employing this doped nanostructure in infrared (IR) photodetectors operating across a temperature range of 77–300 K. The results reveal that doping the 10-AGNR with nitrogen atoms significantly enhances its peak optical responsivity. However, as the temperature increases, a gradual reduction in the maximum response is observed in the presence of dopants. Despite this, the decline remains relatively small, indicating good thermal stability of the optical properties within the studied temperature range. These findings suggest that the doped 10-AGNR retains efficient optical performance at room temperature. Due to its promising optical characteristics and thermal robustness, the proposed nanoribbon structure shows strong potential for application in high-performance IR photodetectors.

Keywords

• “Armchair graphene nanoribbon”
• “Density functional theory (DFT)”
• “Optical responsivity”
• “IR photodetector”
• “Temperature-Dependent”