Spin-Dependent Photovoltaic and Photogalvanic Responses of Optoelectronic Devices Based on Chiral Two-Dimensional Hybrid Organic-Inorganic Perovskites

Jingying Wang, Haipeng Lu, Xin Pan, Junwei Xu, Haoliang Liu, Xiaojie Liu, Dipak R. Khanal, Michael F. Toney, Matthew C. Beard, Z. Valy Vardeny

Research output: Contribution to journalArticlepeer-review

92 Scopus Citations

Abstract

Two-dimensional hybrid organic-inorganic perovskites (2D-HOIPs) that form natural multiple quantum wells have attracted increased research interest due to their interesting physics and potential applications in optoelectronic devices. Recent studies have shown that spintronics applications can also be introduced to 2D-HOIPs upon integrating chiral organic ligands into the organic layers. Here we report spin-dependent photovoltaic and photogalvanic responses of optoelectronic devices based on chiral 2D-HOIPs, namely, (R-MBA)2PbI4 and (S-MBA)2PbI4. The out-of-plane photocurrent response in vertical photovoltaic devices exhibits ∼10% difference upon right and left circularly polarized light (CPL) excitation, which originates from selective spin transport through the chiral multilayers. In contrast, the in-plane photocurrent response generated by CPL excitation of planar photoconductive devices shows a typical response of chirality-induced circular photogalvanic effect that originates from the Rashba splitting in the electronic bands of these compounds. Our studies may lead to potential applications of chiral 2D-HOIPs in optoelectronic devices that are sensitive to the light helicity.

Original languageAmerican English
Pages (from-to)588-595
Number of pages8
JournalACS Nano
Volume15
Issue number1
DOIs
StatePublished - 26 Jan 2021

Bibliographical note

Publisher Copyright:
© 2021 American Chemical Society. All rights reserved.

NREL Publication Number

  • NREL/JA-5900-77172

Keywords

  • chirality
  • circular photogalvanic effect
  • hybrid organic-inorganic perovskites
  • photovoltaic effect
  • spin transport

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