High-Efficiency Organic Tandem Solar Cells With Effective Transition Metal Chelates Interconnecting Layer

Sheng Yung Chang; Yu Che Lin; Pengyu Sun; Yao Tsung Hsieh; Lei Meng; Sang Hoon Bae; Yu Wei Su; Wenchao Huang; Chenhui Zhu; Gang Li; Kung Hwa Wei; Yang Yang

doi:10.1002/solr.201700139

High-Efficiency Organic Tandem Solar Cells With Effective Transition Metal Chelates Interconnecting Layer

Sheng Yung Chang, Yu Che Lin, Pengyu Sun, Yao Tsung Hsieh, Lei Meng, Sang Hoon Bae, Yu Wei Su, Wenchao Huang, Chenhui Zhu, Gang Li, Kung Hwa Wei, Yang Yang

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

21 Citations (Scopus)

Abstract

Organic tandem solar cells have two sub-cells vertically connected via a tunnel junction (or interconnecting layer, ICL), which the ICL plays a critical role of determining the performance of the tandem cell. In this manuscript, we report a new design of the ICL consisting of zirconium (IV) acetylacetonate (Zr-Acac) as the electron transport layer. The Zr-Acac has a suitable work function to pin the Fermi-level of the ICL and hence, can effectively behave as the charge recombination function for the tandem device. Comparing to the reference device consisting of ZnO ETL layer, the Zr-Acac ICL can effectively enhance the efficiency by 20%, from 8.4 to 10.1% power conversion efficiencies. More importantly, the Zr-Acac ETL layer functions effectively without thermal annealing, which not only simplifies the tandem solar cell processing, but also widens the front sub-cell material selection.

Original language	English
Article number	1700139
Journal	Solar RRL
Volume	1
Issue number	10
DOIs	https://doi.org/10.1002/solr.201700139
Publication status	Published - 1 Oct 2017

Keywords

electron transport layer
inverted type
polymer solar cell
tandem

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Energy Engineering and Power Technology
Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1002/solr.201700139

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title = "High-Efficiency Organic Tandem Solar Cells With Effective Transition Metal Chelates Interconnecting Layer",

abstract = "Organic tandem solar cells have two sub-cells vertically connected via a tunnel junction (or interconnecting layer, ICL), which the ICL plays a critical role of determining the performance of the tandem cell. In this manuscript, we report a new design of the ICL consisting of zirconium (IV) acetylacetonate (Zr-Acac) as the electron transport layer. The Zr-Acac has a suitable work function to pin the Fermi-level of the ICL and hence, can effectively behave as the charge recombination function for the tandem device. Comparing to the reference device consisting of ZnO ETL layer, the Zr-Acac ICL can effectively enhance the efficiency by 20%, from 8.4 to 10.1% power conversion efficiencies. More importantly, the Zr-Acac ETL layer functions effectively without thermal annealing, which not only simplifies the tandem solar cell processing, but also widens the front sub-cell material selection.",

keywords = "electron transport layer, inverted type, polymer solar cell, tandem",

author = "Chang, {Sheng Yung} and Lin, {Yu Che} and Pengyu Sun and Hsieh, {Yao Tsung} and Lei Meng and Bae, {Sang Hoon} and Su, {Yu Wei} and Wenchao Huang and Chenhui Zhu and Gang Li and Wei, {Kung Hwa} and Yang Yang",

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doi = "10.1002/solr.201700139",

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T1 - High-Efficiency Organic Tandem Solar Cells With Effective Transition Metal Chelates Interconnecting Layer

AU - Chang, Sheng Yung

AU - Lin, Yu Che

AU - Sun, Pengyu

AU - Hsieh, Yao Tsung

AU - Meng, Lei

AU - Bae, Sang Hoon

AU - Su, Yu Wei

AU - Huang, Wenchao

AU - Zhu, Chenhui

AU - Li, Gang

AU - Wei, Kung Hwa

AU - Yang, Yang

PY - 2017/10/1

Y1 - 2017/10/1

N2 - Organic tandem solar cells have two sub-cells vertically connected via a tunnel junction (or interconnecting layer, ICL), which the ICL plays a critical role of determining the performance of the tandem cell. In this manuscript, we report a new design of the ICL consisting of zirconium (IV) acetylacetonate (Zr-Acac) as the electron transport layer. The Zr-Acac has a suitable work function to pin the Fermi-level of the ICL and hence, can effectively behave as the charge recombination function for the tandem device. Comparing to the reference device consisting of ZnO ETL layer, the Zr-Acac ICL can effectively enhance the efficiency by 20%, from 8.4 to 10.1% power conversion efficiencies. More importantly, the Zr-Acac ETL layer functions effectively without thermal annealing, which not only simplifies the tandem solar cell processing, but also widens the front sub-cell material selection.

AB - Organic tandem solar cells have two sub-cells vertically connected via a tunnel junction (or interconnecting layer, ICL), which the ICL plays a critical role of determining the performance of the tandem cell. In this manuscript, we report a new design of the ICL consisting of zirconium (IV) acetylacetonate (Zr-Acac) as the electron transport layer. The Zr-Acac has a suitable work function to pin the Fermi-level of the ICL and hence, can effectively behave as the charge recombination function for the tandem device. Comparing to the reference device consisting of ZnO ETL layer, the Zr-Acac ICL can effectively enhance the efficiency by 20%, from 8.4 to 10.1% power conversion efficiencies. More importantly, the Zr-Acac ETL layer functions effectively without thermal annealing, which not only simplifies the tandem solar cell processing, but also widens the front sub-cell material selection.

KW - electron transport layer

KW - inverted type

KW - polymer solar cell

KW - tandem

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DO - 10.1002/solr.201700139

M3 - Journal article

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SN - 2367-198X

VL - 1

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JF - Solar RRL

IS - 10

M1 - 1700139

ER -

High-Efficiency Organic Tandem Solar Cells With Effective Transition Metal Chelates Interconnecting Layer

Abstract

Keywords

ASJC Scopus subject areas

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