Bridging the Interfacial Contact for Improved Stability and Efficiency of Inverted Perovskite Solar Cells

Yulan Huang; Tanghao Liu; Dongyang Li; Qing Lian; Yun Wang; Guoliang Wang; Guojun Mi; Yuanyuan Zhou; Abbas Amini; Baomin Xu; Zikang Tang; Chun Cheng; Guichuan Xing

doi:10.1002/smll.202201694

Bridging the Interfacial Contact for Improved Stability and Efficiency of Inverted Perovskite Solar Cells

Yulan Huang, Tanghao Liu, Dongyang Li, Qing Lian, Yun Wang, Guoliang Wang, Guojun Mi, Yuanyuan Zhou, Abbas Amini, Baomin Xu, Zikang Tang, Chun Cheng^*, Guichuan Xing^*

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Journal article › peer-review

21 Citations (Scopus)

Abstract

Inverted perovskite solar cells (PSCs) have received widespread attention due to their facile fabrication and wide applications. However, their power conversion efficiency (PCE) is reported lower than that of regular PSCs because of the undesirable interfacial contact between perovskite and the hydrophobic hole transport layer (HTL). Here, an interface regulation strategy is proposed to overcome this limitation. A small molecule ([2-(9H-carbazol-9-yl) ethyl] phosphonic acid, abbreviated as 2P), composed of carbazole and phosphonic acid groups, is inserted between perovskite and HTL. Morphological characterization and theoretical calculation reveal that perovskite bonds stronger on 2P-modified HTL than on pristine HTL. The improved interfacial contact facilitates hole extraction and retards degradation. Upon the incorporation of 2P, inverted PSCs deliver a high PCE of over 22% with superior stability, keeping 84.6% of initial efficiency after 7200 h storage under an ambient atmosphere with a relative humidity of ≈30–40%. This strategy provides a simple and efficient way to boost the performance of inverted PSCs.

Original language	English
Article number	2201694
Journal	Small
Volume	18
Issue number	24
DOIs	https://doi.org/10.1002/smll.202201694
Publication status	Published - 16 Jun 2022

Scopus Subject Areas

Biotechnology
Chemistry(all)
Biomaterials
Materials Science(all)
Engineering (miscellaneous)

User-Defined Keywords

hole extraction
interfacial contact
inverted perovskite solar cells
stability

UN SDGs

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

Access to Document

10.1002/smll.202201694

Cite this

@article{c058a5116ffe48188d5a89e2af03894a,

title = "Bridging the Interfacial Contact for Improved Stability and Efficiency of Inverted Perovskite Solar Cells",

abstract = "Inverted perovskite solar cells (PSCs) have received widespread attention due to their facile fabrication and wide applications. However, their power conversion efficiency (PCE) is reported lower than that of regular PSCs because of the undesirable interfacial contact between perovskite and the hydrophobic hole transport layer (HTL). Here, an interface regulation strategy is proposed to overcome this limitation. A small molecule ([2-(9H-carbazol-9-yl) ethyl] phosphonic acid, abbreviated as 2P), composed of carbazole and phosphonic acid groups, is inserted between perovskite and HTL. Morphological characterization and theoretical calculation reveal that perovskite bonds stronger on 2P-modified HTL than on pristine HTL. The improved interfacial contact facilitates hole extraction and retards degradation. Upon the incorporation of 2P, inverted PSCs deliver a high PCE of over 22% with superior stability, keeping 84.6% of initial efficiency after 7200 h storage under an ambient atmosphere with a relative humidity of ≈30–40%. This strategy provides a simple and efficient way to boost the performance of inverted PSCs.",

keywords = "hole extraction, interfacial contact, inverted perovskite solar cells, stability",

author = "Yulan Huang and Tanghao Liu and Dongyang Li and Qing Lian and Yun Wang and Guoliang Wang and Guojun Mi and Yuanyuan Zhou and Abbas Amini and Baomin Xu and Zikang Tang and Chun Cheng and Guichuan Xing",

note = "The authors acknowledge the Natural Science Foundation of China (Grant No. 91963129, 51776094, 61935017, and 62175268), the Basic Research Project of Science and Technology Plan of Shenzhen (Grant No. JCYJ20180504165655180), Shenzhen-Hong Kong-Macao Science and Technology Innovation Project (Category C) (SGDX2020110309360100), the Science and Technology Development Fund, Macao SAR (File no. FDCT-0044/2020/A1), UM's research fund (File no. MYRG2018-00148-IAPME, MYRG2020-00151-IAPME), Natural Science Foundation of Guangdong Province, China (2019A1515012186), Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials (2019B121205002), and Foundation of Shenzhen Science and Technology Innovation Committee (Grant No. JCYJ20180302174021198). The authors acknowledge the assistance of SUSTech Core Research Facilitates. Y.Z. acknowledges the start-up grants from the Department of Physics, Faculty of Science, and Research Committee at the Hong Kong Baptist University. Publisher Copyright: {\textcopyright} 2022 Wiley-VCH GmbH.",

year = "2022",

month = jun,

day = "16",

doi = "10.1002/smll.202201694",

language = "English",

volume = "18",

journal = "Small",

issn = "1613-6810",

publisher = "Wiley-VCH Verlag",

number = "24",

}

TY - JOUR

T1 - Bridging the Interfacial Contact for Improved Stability and Efficiency of Inverted Perovskite Solar Cells

AU - Huang, Yulan

AU - Liu, Tanghao

AU - Li, Dongyang

AU - Lian, Qing

AU - Wang, Yun

AU - Wang, Guoliang

AU - Mi, Guojun

AU - Zhou, Yuanyuan

AU - Amini, Abbas

AU - Xu, Baomin

AU - Tang, Zikang

AU - Cheng, Chun

AU - Xing, Guichuan

N1 - The authors acknowledge the Natural Science Foundation of China (Grant No. 91963129, 51776094, 61935017, and 62175268), the Basic Research Project of Science and Technology Plan of Shenzhen (Grant No. JCYJ20180504165655180), Shenzhen-Hong Kong-Macao Science and Technology Innovation Project (Category C) (SGDX2020110309360100), the Science and Technology Development Fund, Macao SAR (File no. FDCT-0044/2020/A1), UM's research fund (File no. MYRG2018-00148-IAPME, MYRG2020-00151-IAPME), Natural Science Foundation of Guangdong Province, China (2019A1515012186), Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials (2019B121205002), and Foundation of Shenzhen Science and Technology Innovation Committee (Grant No. JCYJ20180302174021198). The authors acknowledge the assistance of SUSTech Core Research Facilitates. Y.Z. acknowledges the start-up grants from the Department of Physics, Faculty of Science, and Research Committee at the Hong Kong Baptist University. Publisher Copyright: © 2022 Wiley-VCH GmbH.

PY - 2022/6/16

Y1 - 2022/6/16

N2 - Inverted perovskite solar cells (PSCs) have received widespread attention due to their facile fabrication and wide applications. However, their power conversion efficiency (PCE) is reported lower than that of regular PSCs because of the undesirable interfacial contact between perovskite and the hydrophobic hole transport layer (HTL). Here, an interface regulation strategy is proposed to overcome this limitation. A small molecule ([2-(9H-carbazol-9-yl) ethyl] phosphonic acid, abbreviated as 2P), composed of carbazole and phosphonic acid groups, is inserted between perovskite and HTL. Morphological characterization and theoretical calculation reveal that perovskite bonds stronger on 2P-modified HTL than on pristine HTL. The improved interfacial contact facilitates hole extraction and retards degradation. Upon the incorporation of 2P, inverted PSCs deliver a high PCE of over 22% with superior stability, keeping 84.6% of initial efficiency after 7200 h storage under an ambient atmosphere with a relative humidity of ≈30–40%. This strategy provides a simple and efficient way to boost the performance of inverted PSCs.

AB - Inverted perovskite solar cells (PSCs) have received widespread attention due to their facile fabrication and wide applications. However, their power conversion efficiency (PCE) is reported lower than that of regular PSCs because of the undesirable interfacial contact between perovskite and the hydrophobic hole transport layer (HTL). Here, an interface regulation strategy is proposed to overcome this limitation. A small molecule ([2-(9H-carbazol-9-yl) ethyl] phosphonic acid, abbreviated as 2P), composed of carbazole and phosphonic acid groups, is inserted between perovskite and HTL. Morphological characterization and theoretical calculation reveal that perovskite bonds stronger on 2P-modified HTL than on pristine HTL. The improved interfacial contact facilitates hole extraction and retards degradation. Upon the incorporation of 2P, inverted PSCs deliver a high PCE of over 22% with superior stability, keeping 84.6% of initial efficiency after 7200 h storage under an ambient atmosphere with a relative humidity of ≈30–40%. This strategy provides a simple and efficient way to boost the performance of inverted PSCs.

KW - hole extraction

KW - interfacial contact

KW - inverted perovskite solar cells

KW - stability

UR - http://www.scopus.com/inward/record.url?scp=85132053176&partnerID=8YFLogxK

UR - https://onlinelibrary.wiley.com/doi/10.1002/smll.202201694

U2 - 10.1002/smll.202201694

DO - 10.1002/smll.202201694

M3 - Journal article

AN - SCOPUS:85132053176

SN - 1613-6810

VL - 18

JO - Small

JF - Small

IS - 24

M1 - 2201694

ER -

Bridging the Interfacial Contact for Improved Stability and Efficiency of Inverted Perovskite Solar Cells

Abstract

Scopus Subject Areas

User-Defined Keywords

UN SDGs

Access to Document

Other files and links

Cite this