تقرير
Twisted MoSe2 Homobilayer Behaving as a Heterobilayer
| العنوان: | Twisted MoSe2 Homobilayer Behaving as a Heterobilayer |
|---|---|
| المؤلفون: | Karmakar, Arka, Al-Mahboob, Abdullah, Zawadzka, Natalia, Raczyński, Mateusz, Yang, Weiguang, Arfaoui, Mehdi, Gayatri, Kucharek, Julia, Sadowski, Jerzy T., Shin, Hyeon Suk, Babiński, Adam, Pacuski, Wojciech, Kazimierczuk, Tomasz, Molas, Maciej R |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| الوصف: | Heterostructures (HSs) formed by the transition-metal dichalcogenides (TMDCs) materials have shown great promise in next-generation optoelectronic and photonic applications. An artificially twisted HS, allows us to manipulate the optical, and electronic properties. With this work, we introduce the understanding of the complex energy transfer (ET) process governed by the dipolar interaction in a twisted molybdenum diselenide (MoSe2) homobilayer without any charge-blocking interlayer. We fabricated an unconventional homobilayer (i.e., HS) with a large twist angle by combining the chemical vapor deposition (CVD) and mechanical exfoliation (Exf.) techniques to fully exploit the lattice parameters mismatch and indirect/direct (CVD/Exf.) bandgap nature. This effectively weaken the charge transfer (CT) process and allows the ET process to take over the carrier recombination channels. We utilize a series of optical and electron spectroscopy techniques complementing by the density functional theory calculations, to describe a massive photoluminescence enhancement from the HS area due to an efficient ET process. Our results show that the electronically decoupled MoSe2 homobilayer is coupled by the ET process, mimicking a 'true' heterobilayer nature. Comment: 4 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2404.15542 |
| رقم الأكسشن: | edsarx.2404.15542 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |