Volume 64, Issue 30 e202505876
Research Article

Homogenized Self-Assembled Molecules for Inverted Perovskite Solar Cells

Yu Feng

Yu Feng

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

These authors contributed equally to this work.

Search for more papers by this author
Yu Wang

Yu Wang

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

These authors contributed equally to this work.

Search for more papers by this author
Hao Yang

Hao Yang

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

These authors contributed equally to this work.

Search for more papers by this author
Saisai Li

Saisai Li

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
Jiefeng Luo

Jiefeng Luo

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
Xue Han

Xue Han

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
Prof. Thamraa Alshahrani

Prof. Thamraa Alshahrani

Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, 11671 Saudi Arabia

Search for more papers by this author
Bo Mai

Bo Mai

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070 P.R. China

Search for more papers by this author
Di Wang

Di Wang

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
Zijin Ding

Zijin Ding

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
Wenda Sun

Wenda Sun

Tianjin Key Laboratory of Efficient Utilization of Solar Energy, Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, State Key Laboratory of Photovoltaic Materials and Cells, Institute of Photoelectronic Thin Film Devices and Technology, Nankai University, Tianjin, 300350 P.R. China

Search for more papers by this author
Changjiu Sun

Changjiu Sun

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
Prof. Quanlin Chen

Prof. Quanlin Chen

College of New Energy and Materials, Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde, 352100 P.R. China

Search for more papers by this author
Keyu Wei

Keyu Wei

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
Yanxing Feng

Yanxing Feng

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
Lutong Song

Lutong Song

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
Prof. Xiyan Li

Prof. Xiyan Li

Tianjin Key Laboratory of Efficient Utilization of Solar Energy, Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, State Key Laboratory of Photovoltaic Materials and Cells, Institute of Photoelectronic Thin Film Devices and Technology, Nankai University, Tianjin, 300350 P.R. China

Search for more papers by this author
Prof. Xiao-Ye Wang

Prof. Xiao-Ye Wang

State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, Haihe Laboratory of Sustainable Chemical Transformations, College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
Prof. Wen-Di Li

Prof. Wen-Di Li

Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, 999077 P.R. China

Search for more papers by this author
Prof. Qinyou An

Prof. Qinyou An

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070 P.R. China

Search for more papers by this author
Prof. Yuanzhi Jiang

Corresponding Author

Prof. Yuanzhi Jiang

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

E-mail: [email protected]

Search for more papers by this author
Prof. Mingjian Yuan

Prof. Mingjian Yuan

State Key Laboratory of Advanced Chemical Power Sources, Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 P.R. China

Search for more papers by this author
First published: 20 May 2025
Citations: 1

Graphical Abstract

We report a rigid SAM (PhPAPy), designed to leverage the structural tunability of SAMs for achieving uniform substrate coverage with a single molecule. The high-quality HTL based on PhPAPy effectively minimizes direct perovskite–electrode contact, reduces defect density, and suppresses nonradiative recombination at the buried interface. The champion device achieved a certified reverse-scan PCE of 26.74% while maintaining T95 = 2000 h long-term stability (ISOS-L-2).

Abstract

Inverted perovskite solar cells (PSCs) have rapidly improved, driven by advancements in self-assembled molecules (SAMs). However, achieving homogeneous SAM coverage on substrates remains challenging, directly impacting device performance and stability. Here, we present (4-(pyren-1-yl)phenyl)phosphonic acid (PhPAPy), a SAM with a rigid aromatic ring structure. Ab initio molecular dynamics (AIMD) simulations reveal that this rigidity limits rotational freedom, promoting a near-vertical molecular orientation on the substrate. Additionally, π–π interactions between the planar pyrene rings enhance molecular packing, forming a homogeneous and dense SAM layer. As a result, the uniform PhPAPy effectively minimizes perovskite–substrate direct contact, enhances the interfacial properties, reduces buried interface defects, and improves both efficiency and stability. With PhPAPy SAM, the assembled inverted PSCs achieve a certified reverse-scanning power conversion efficiency (PCE) of 26.74% and a certified stabilized power output (SPO) efficiency of 26.12% (from National Institute of Metrology in China). These devices retain 95% of their initial efficiency after 2000 h of maximum power point tracking (MPPT) under continuous AM 1.5G illumination at 65 °C and ambient humidity (ISOS-L-2).

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.