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Anomalous Polarization Driven Quantum Confined Stark Effect in Halide Perovskite Polymer Quantum Structures for Single Layer Electroluminescence

Year: 2026

Type: preprint

Abstract: The quantum-confined Stark effect (QCSE) has emerged as a powerful mechanism for electrically tuning the optical properties of semiconductors. Through QCSE-induced band-structure modulation, we show that the soft-lattice ionic species and electroactive polymer interact in an anomalous polarization field mediating ion conduction, beyond the conventional bias-driven migration. The stability and magnitude of this conduction channel are governed by the spatial distribution of bound charges at the polarized interface, tunable through external poling. Single layer Li+-free light-emitting electrochemical cells (LEECs) with a PAN:PEO:MAPbBr3 composite were fabricated. The resulting anomalous internal electric field not only lowers the turn-on voltage to ~ 3 V by assisting charge injection but also imprints a measurable Quantum Confined Stark Effect (QCSE) on the embedded quantum dots. The results establish polarization-driven ion conduction as a powerful mechanism for designing next-generation solid-state optoelectronics.

Source: ChemRxiv

DOI: 10.26434/chemrxiv.15010953/v1

Authors: Sehreen Manzoor, Chaithanya Pusapalli, Prasanna Kumar S Mural, Aswani Yella

Institution: Indian Institute of Technology Bombay

Language: English

Topic: Perovskite Materials and Applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Arthritis National Research Foundation, National Research Foundation, Department of Science and Technology, Ministry of Science and Technology, India, Indian Institute of Technology Bombay

OpenAlex ID: W7223325554

Cites: 39

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Related to: 10