PbSe/PbS Core/Shell Nanoplatelets with Enhanced Stability and Photoelectric Properties

Overview

Journal Nanomaterials (Basel)

Date 2023 Dec 8

PMID 38063746

Authors

Anton A Babaev

Ivan D Skurlov

Sergei A Cherevkov

Peter S Parfenov

Mikhail A Baranov

Natalya K Kuzmenko

Aleksandra V Koroleva

Evgeniy V Zhizhin

Anatoly V Fedorov

Affiliations

Soon will be listed here.

Abstract

Lead chalcogenide nanoplatelets (NPLs) have emerged as a promising material for devices operating in the near IR and IR spectrum region. Here, we first apply the cation exchange method to PbSe/PbS core/shell NPL synthesis. The shell growth enhances NPL colloidal and environmental stability, and passivates surface trap states, preserving the main core physical properties. To prove the great potential for optoelectrical applications, we fabricate a photoconductor using PbSe/PbS NPLs. The device demonstrates enhanced conductivity and responsivity with fast rise and fall times, resulting in a 13 kHz bandwidth. The carrier transport was investigated with the field effect transistor method, showing p-type conductivity with charge mobility of 1.26 × 10 cm·V·s.

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