Tu-POS-04 - Interface-Controlled Transport and Broadband Photoresponse in ZnO photodetectors modified with Nitrogen and Phosphorus-Doped Carbon Dots

Event

EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich

Band

Poster

Chapter

Photonics And Optical Sensors

Author(s)

N. Ganotis, S. N. Katsantonis, C. Tsamis - National Center for Scientific Research (NCSR) "Demokritos",Athens (Greece), S. N. Katsantonis, K. V. Kordatos, E. Hourdakis - National Technical University of Athens (NTUA),Athens (Greece), S. Gardelis - National and Kapodistrian University of Athens (NKUA),Athens (Greece), M. Bošković, D. Randjelović - Institute of Chemistry,Technology and Metallurgy (ICTM),University of Belgrade,Belgrade (Serbia), M. A. Saeed, S. Dean, Y. Malallah - Kuwait Institute for Scientific Research,Kuwait City (Kuwait)

Pages

529 - 530

DOI

10.5162/eurosensors2026/Tu-POS-04

ISBN

978-3-910600-12-6

Price

free

Abstract

In this work we investigate the influence of N- and P-doped carbon dots on ZnO thin films and their applications as photodetectors. Our results indicate that aqueous deposition leads to nonuniform interfaces and asymmetric I–V behavior, while glycerol deposition gives more uniform and symmetric transport. Under illumination, conductivity increases via photogeneration and electron injection from the carbon dots, consistent with a photogating effect. The photocurrent spectrum broadens from the UV (300–500 nm) to the visible–NIR (~110⁰ nm) due to carbon dot absorption and interfacial states.