Dynamic halide perovskite heterojunction generates direct current

Chunqing Ma; Bosung Kim; Sang Woo Kim; Nam Gyu Park

doi:10.1039/d0ee03487h

Dynamic halide perovskite heterojunction generates direct current

Chunqing Ma, Bosung Kim, Sang Woo Kim, Nam Gyu Park

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Here, we demonstrate a dynamic perovskite device capable of converting mechanical energy into direct current (DC) electrical energy, combining two concepts: carrier generation from the triboelectric effect and carrier separation through band energy level difference. By analyzing and comparing different perovskite (FAPbI3, MAPbI3, MAPbBr3, PEA2PbI4, etc.) and charge transport layer (CTL) materials (spiro-MeOTAD, PTAA, TiO2, SnO2, etc.), the key rules for determining DC output and performances are identified: (1) a suitable band alignment (band position and bandgap) between perovskite and CTL can separate the carrier transfer; (2) a large difference in work function between two layers leads to high electrical potential difference; and (3) a high carrier concentration can enhance the DC power-generating performances. Furthermore, it is found that the light illumination acts as a stimulus to current output to a large extent, which is due to the coupling effect from triboelectric and photovoltaic effects. This study provides a set of key rules to explain the mechanism and to further improve the performance of the dynamic perovskite/CTL heterojunction.

Original language	English
Pages (from-to)	374-381
Number of pages	8
Journal	Energy and Environmental Science
Volume	14
Issue number	1
DOIs	https://doi.org/10.1039/d0ee03487h
Publication status	Published - 2021 Jan

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Ministry of Science and ICT (MSIT) of Korea under contracts NRF-2016M3D1A1027663 and NRF-2016M3D1A1027664 (Future Materials Discovery Program) and NRF-2018R1A2A1A19021947 (the Basic Science Research Program). This research was in part supported by Energy Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), funded by the Ministry of Trade, Industry & Energy (No. 20193091010310).

Publisher Copyright:
© The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

Environmental Chemistry
Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Pollution

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1039/d0ee03487h

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abstract = "Here, we demonstrate a dynamic perovskite device capable of converting mechanical energy into direct current (DC) electrical energy, combining two concepts: carrier generation from the triboelectric effect and carrier separation through band energy level difference. By analyzing and comparing different perovskite (FAPbI3, MAPbI3, MAPbBr3, PEA2PbI4, etc.) and charge transport layer (CTL) materials (spiro-MeOTAD, PTAA, TiO2, SnO2, etc.), the key rules for determining DC output and performances are identified: (1) a suitable band alignment (band position and bandgap) between perovskite and CTL can separate the carrier transfer; (2) a large difference in work function between two layers leads to high electrical potential difference; and (3) a high carrier concentration can enhance the DC power-generating performances. Furthermore, it is found that the light illumination acts as a stimulus to current output to a large extent, which is due to the coupling effect from triboelectric and photovoltaic effects. This study provides a set of key rules to explain the mechanism and to further improve the performance of the dynamic perovskite/CTL heterojunction.",

author = "Chunqing Ma and Bosung Kim and Kim, {Sang Woo} and Park, {Nam Gyu}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Ministry of Science and ICT (MSIT) of Korea under contracts NRF-2016M3D1A1027663 and NRF-2016M3D1A1027664 (Future Materials Discovery Program) and NRF-2018R1A2A1A19021947 (the Basic Science Research Program). This research was in part supported by Energy Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), funded by the Ministry of Trade, Industry & Energy (No. 20193091010310). Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

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Dynamic halide perovskite heterojunction generates direct current

Abstract

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