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

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^-2 cm²·V^-1·s^-1.

SUBMITTER: Babaev AA

PROVIDER: S-EPMC10707907 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature

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

Babaev Anton A AA Skurlov Ivan D ID Cherevkov Sergei A SA Parfenov Peter S PS Baranov Mikhail A MA Kuzmenko Natalya K NK Koroleva Aleksandra V AV Zhizhin Evgeniy V EV Fedorov Anatoly V AV

Nanomaterials (Basel, Switzerland) 20231129 23

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 de ...[more]

PMID: 38063746

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