Xiangnan Sun

National Center for Nanoscience and Technology

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Yunqi Liu

Beijing National Laboratory for Molecular Sciences

Lidan Guo

National Center for Nanoscience and Technology

Xianrong Gu

National Center for Nanoscience and Technology

Gui Yu

University of Chinese Academy of Sciences

Yunlong Guo

Beijing National Laboratory for Molecular Sciences

Luis E. Hueso

CIC nanoGUNE

Xiangwei Zhu

Qingdao University

Chong‐an Di

Chinese Academy of Sciences

Erjun Zhou

National Center for Nanoscience and Technology

Shinji Yamashita

Mie University

Cooperative Institutions

Chinese Academy of Sciences

157

University of Chinese Academy of Sciences

National Center for Nanoscience and Technology

Beijing National Laboratory for Molecular Sciences

Institute of Chemistry

Beijing University of Chemical Technology

Wuhan University

Zhengzhou University

The University of Tokyo

Peking University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

A Fe–Ni₅P₄/Fe–Ni₂P heterojunction electrocatalyst for highly efficient solar-to-hydrogen generation

Journal of Materials Chemistry A (2020)

Rui Zhang Guodong Wang Zhenhua Wei Xue Teng Jiejie Wang

A Fe–Ni₅P₄/Fe–Ni₂P heterojunction electrocatalyst is developed by a dual synergy strategy, which shows highly efficient solar-to-hydrogen generation performance driven by an organic solar cell.

10.1039/d0ta08631b

Cite

Citations (42)

Side chain engineering of quinoxaline-based small molecular nonfullerene acceptors for high-performance poly(3-hexylthiophene)-based organic solar cells

Science China Chemistry (2019)

Bo Xiao Qianqian Zhang Gongqiang Li Mengzhen Du Yanfang Geng

Quinoxaline

Side chain

Acceptor

10.1007/s11426-019-9618-7

Cite

Citations (47)

Naphthodithiophene Diimide (NDTI)‐Based Cathode Interlayer Material Enables 19% Efficiency Binary Organic Solar Cells

Advanced Functional Materials (2023)

Zongtao Wang Helin Wang Mengzheng Du Xue Lai Feng He

Abstract A fused naphthodithiophene diimide (NDTI) derivative is first used as cathode interlayer materials (CIMs) in organic solar cells, by introducing two dimethylamine‐functionalized fluorenes on both sides, namely NDTI1 . Meanwhile, two non‐fused naphthalene diimide (NDI) derivatives are synthesized as the control CIMs to validate the design strategy of fused NDI. All three CIMs show high thermal stability, robust adhesion, and strong electrode modification capability. Compared with two NDI‐based materials, NDTI1 possesses excellent film‐forming capacity and strong crystallinity, simultaneously. Besides, NDTI1 presents a strong self‐doping effect and distinct intermolecular interaction with non‐fullerene acceptors. As expected, the NDTI1 ‐based OSCs achieve a power conversion efficiency (PCE) of 18.02% using the PM6:Y6 active layer and a champion PCE of 19.01% employing the active layer PM6:L8‐BO, which is attributed to improve charge transport and extraction, and suppressive charge recombination. More importantly, NDTI1 retains 91% of the optimal PCE when the film thickness increases from 7 to 20 nm. Furthermore, NDTI1 also exhibits satisfactory universality for different active layer materials and excellent device stability.

Active layer

Diimide

Thermal Stability

10.1002/adfm.202313240

Cite

Citations (16)

Surface Reaction Induced Compressive Strain for Stable Inorganic Perovskite Solar Cells

Angewandte Chemie International Edition (2024)

Ying Jiang Xiangnan Sun Tianjun Liu Wei Zhang Peng Xu

Cesium-based inorganic perovskites have emerged as promising light-harvesting materials for perovskite solar cells (PSCs) due to their promising thermal- and photo-stability. However, obstacles to commercialization remain regarding their phase instability. In this work, we report a facile and effective strategy to regulate the surface compressive strain via in-situ surface reaction to stabilize CsPbI3 perovskite. The use of a chelating ligand with a molecular configuration closely matching the integer multiples of the unit cell lattice parameters of CsPbI3 induces compressive strain at the surface of CsPbI3. The chemical bonding and strain modulation synergistically not only passivate film defects, but also inhibit perovskite phase degradation, thus significantly improving the intrinsic stability of inorganic perovskite. Consequently, enhanced power conversion efficiency (PCE) of 21.0% and 18.6% were respectively achieved in 0.16-cm2 lab-scale devices and 25.3-cm2 solar modules. Further, surface reaction enables PSCs with enhanced thermal and operational stability; these devices retain over 95% of their initial PCE after damp-heat tests (i.e., in 85 ℃ and 85% R.H. air) for 2000 h, and remain 99% of their initial PCE after operating for 2000 h, representing one of the most stable inorganic PSCs reported so far.

Strain (injury)

10.1002/anie.202410721

Cite

Citations (1)

Advantage of arch-shaped structure on transistor performances over linear-shaped structure in dibenzothienopyrrole semiconductors

Organic Electronics (2018)

Wenjing Mu Su Sun Jing Zhang Mingyang Jiao Wentao Wang

Organic field-effect transistor

Pyrrole

Crystal (programming language)

Electron Mobility

10.1016/j.orgel.2018.06.044

Cite

Citations (8)

Electron-deficient TVT unit-based D–A polymer donor for high-efficiency thick-film OSCs

Nanotechnology (2021)

Liting Zhang Yilin Chang Xiangwei Zhu Chen Yang Yanan Shi

As the power conversion efficiencies of organic solar cells (OSCs) have been improved continuously in recent years, more attention will be paid to the industrial production and practical application of OSCs. However, there are still many problems to be solved in the process of large-scale production. Among them, reducing the costs of the materials and enhancing the film-thickness tolerance of the active layer are the two key points. Therefore, it is urgent to develop organic semiconductor materials which are easy to synthesize and suitable for the construction of high-efficiency, thick-film OSCs. In this work, we have focused on the (E)-2-[2-(thiophen-2-yl)vinyl]thiophene (TVT) unit because of its unique coplanar structure. And we noticed that TVT was mostly used as an electron-donating unit in the previous reports. However, we have successfully modified TVT into a new type of electron-withdrawing unit by the introduction of fluorine atoms/ester groups. And two new donor-acceptor (D-A) copolymers have been obtained by combining the new TVT unit with benzo[2,1-b:4,5-b']dithiophene unit. Among them, the polymer based on the ester modified TVT unit presents excellent photovoltaic performance by virtue of its good solubility and preferable molecular stacking mode, and the corresponding devices also show extraordinarily high-thickness tolerance. The emergence of this new electron-withdrawing TVT unit will undoubtedly further promote the development of low-cost, high-efficiency, thick-film OSCs.

Electron donor

Electron Mobility

Acceptor

Fluorine

10.1088/1361-6528/ac335a

Cite

Citations (3)

Quantitative Analysis of the Role of the First Layer in p‐ and n‐Type Organic Field‐Effect Transistors with Graphene Electrodes

Advanced Materials (2012)

Yugeng Wen Jianyi Chen Lei Zhang Xiangnan Sun Yan Zhao

Efficient field-effect mobilities measured from both p- and n-type organic monolayer field-effect transistors that utilize graphene electrodes permit quantitative analysis of the role of the first layer. Information about the relationship between the kinetics of the diffusion process and film morphology of the first layer during the increasing substrate temperature, and correlations of field-effect mobilities of the first monolayer and the substrate temperature is obtained. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.

10.1002/adma.201104055

Cite

Citations (7)

“d‐Electron Complementation” Induced V‐Co Phosphide for Efficient Overall Water Splitting (Adv. Energy Mater. 38/2021)

Advanced Energy Materials (2021)

Rui Zhang Zhenhua Wei Gaoyang Ye Guanjie Chen Jiaojiao Miao

Water Splitting In article number 2101758, Rui Zhang, Xiangwei Zhu, Xiaoqun Cao, Xiangnan Sun, and co-workers report a Co-V phosphide nanoneedle electrocatalyst for efficient overall water splitting, which stems from the “d-electron complementation” effect from V to Co in the matrix. This highlights d-orbital engineering in developing novel efficient bifunctional electrocatalysts.

Phosphide

10.1002/aenm.202170148

Cite

Citations (5)

NH₄Br‐Assisted Two‐Step‐Processing of Guanidinium‐Rich Perovskite Films for Extremely Stable Carbon‐Based Perovskite Solar Cells in Ambient Air

Solar RRL (2022)

Yao Li Siqi Li Yan Li Xiangnan Sun Xinding Lv

Perovskite Solar CellsIn article number 2101103, Yan-Zhen Zheng, Meilan Huang, Xia Tao, and co-workers fabricated NH4Br-assisted rich guanidinium perovskite films that allow inducing the formation of the intermediate phase NH4PbI3 and alleviating the disorder of the octahedron caused by an alien cation. The resultant films behave extremely well in photovoltaic performance upon assembly as carbon-based perovskite solar cells.

Carbon fibers

10.1002/solr.202270071

Cite

Citations (2)

Polymer‐Assisted Heterogeneous Lead Iodide in a Two‐Step Process: Fabrication of Efficient and Stable Perovskite Solar Cells

Solar RRL (2023)

Yao Li Xiangnan Sun Yan Li Fei Deng Siqi Li

Developing pinhole‐free, superior crystal, and high‐quality perovskite films by regulating the lead iodide microstructure in two‐step sequential deposition has attracted increased interest in the domain of perovskite solar cells (PSCs) for commercial applications. Herein, a multifunctional polymer, polyvinyl alcohol (PVA), is incorporated into a two‐step sequential deposition process to regulate morphological transform of PbI 2 and then the high‐quality perovskite films are obtained. PVA as a scaffold combines with uncoordinated Pb 2+ in the PbI 2 precursor solution through a strong Pb–O interaction, leading to rough PbI 2 . In the second step, the uneven and heterogeneous PbI 2 allows FA&MA permeation and then drives adequate coordination reactions between PbI 6 4− octahedron and bulky cations. Furthermore, the PVA gathering at grain boundary passivates redundant Pb 2+ by the PbO bonding interactions in the final polycrystalline films. Consequently, high‐quality (FAPbI 3 ) 0.90 (MAPbBr 3 ) 0.10 perovskite layers are obtained with promoted crystal growth, inhibited voids formation/delamination, and thus reduced trap states. The universality and versatility of this strategy not only enables improved power conversion efficiencies of 22.81% (Ag‐based devices) and 16.58% (carbon‐based devices) across architectures but also remarkedly enhances the device stability in ambient‐air aging condition, which delivers a facile and broadly applicable additive synergetic strategy for efficient and stable PSCs.

Solution process

10.1002/solr.202201132

Cite

Citations (5)