Journal
CURRENT APPLIED PHYSICS
Volume 36, Issue -, Pages 27-33Publisher
ELSEVIER
DOI: 10.1016/j.cap.2022.01.005
Keywords
vdW epitaxy; Interfacial interaction; TypeII energy alignment; Temperature dependent PL; Intercalation
Funding
- National Natural Science Foundation (NSF) of China [11874427, 11804395, 11774396, 11974045]
- National Key Research and Development Program of China [2016YFA0202300]
- Strategic Priority Research Program (B) of CAS [XDB30000000]
- Beijing Institute of Technology Research Fund Program for Young Scholars [3050011181909]
Ask authors/readers for more resources
This article describes the successful conversion of ultrathin PbI2/MoS2 into CH3NH3PbI3/MoS2 heterostructures via CH3NH3I vapor processing and demonstrates the high-quality of the converted materials. The quenching of photoluminescence intensity of both MoS2 and CH3NH3PbI3 in CH3NH3PbI3/MoS2 suggests a Type-II energy level alignment at the interface. Temperature-dependent photoluminescence measurements reveal an opposite trend of emission peak position shift between CH3NH3PbI3 and MoS2, which can be attributed to the thermal expansion and electron-phonon coupling effects. These findings highlight the potential importance of CH3NH3PbI3/TMDC heterostructures in optoelectronic applications.
Hybrid organic-inorganic perovskite materials have obtained considerable attention due to their exotic opto-electronic properties and extraordinarily high performance in photovoltaic devices. Herein, we successively converted the ultrathin PbI2/MoS2 into the CH3NH3PbI3/MoS2 heterostructures via CH3NH3I vapor processing. Atomic force microscopy (AFM). Scanning electron microscopy (SEM) and X-ray photoemission spectroscopy (XPS) measurements prove the high-quality of the converted CH3NH3PbI3/MoS2. Both MoS2 and CH3NH3PbI3 related photoluminescence (PL) intensity quenching in CH3NH3PbI3/MoS2 implies a Type-II energy level alignment at the interface. Temperature-dependent PL measurements show that the emission peak position shifting trend of CH3NH3PbI3 is opposite to that of MoS2 (traditional semiconductors) due to the thermal expansion and electron-phonon coupling effects. The CH3NH3PbI3/TMDC heterostructures are useful in fabricating innovative devices for wider optoelectronic applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available