November 24, 2025Nano Letters

Layer-Dependent Asymmetric Dipoles Induced Formation of Atomically Thin p–n Junctions

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CPChengfeng PanTokyo Institute of Technology JLJin LvTaiyuan Normal University DSDazhong SunChongqing University

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Overview

Theoretical study demonstrates self-doped pn junction formation in polarized 2D semiconductors via asymmetric dipoles, highlighting a universal route to advance atomically thin electronics.

Key Points

Atomically thin pn junctions form in two-dimensional polarized semiconductors via layer-dependent asymmetric dipoles, overcoming the limits of bulk doping strategies.
Theoretical model of a sandwich structure demonstrates selective electron and hole injection when the metal work function falls between opposing surface work functions.
May enable versatile two-dimensional electronics in the post-Moore era, as increasing the number of polarized layers tunes work function disparity to expand electrode choice.

Cite This Study

Pan et al. (2025) studied this question.

synapsesocial.com/papers/69403b952d562116f290c623 https://doi.org/10.1021/acs.nanolett.5c04803

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November 24, 2025Nano Letters

Layer-Dependent Asymmetric Dipoles Induced Formation of Atomically Thin p–n Junctions

View Full Paper

Ask AI

Bookmark

Authors

CPChengfeng PanTokyo Institute of Technology JLJin LvTaiyuan Normal University DSDazhong SunChongqing University

Discussion

Member takes

Overview

Theoretical study demonstrates self-doped pn junction formation in polarized 2D semiconductors via asymmetric dipoles, highlighting a universal route to advance atomically thin electronics.

Key Points

Atomically thin pn junctions form in two-dimensional polarized semiconductors via layer-dependent asymmetric dipoles, overcoming the limits of bulk doping strategies.
Theoretical model of a sandwich structure demonstrates selective electron and hole injection when the metal work function falls between opposing surface work functions.
May enable versatile two-dimensional electronics in the post-Moore era, as increasing the number of polarized layers tunes work function disparity to expand electrode choice.

Cite This Study

Pan et al. (2025) studied this question.

synapsesocial.com/papers/69403b952d562116f290c623 https://doi.org/10.1021/acs.nanolett.5c04803

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