Liang Chu

Hangzhou Dianzi University

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Xing’ao Li

Nanjing University of Posts and Telecommunications

Ruiyuan Hu

Nanjing University of Posts and Telecommunications

Yuhui Ma

Nanjing Institute of Technology

Jian Zhang

Nanjing University of Posts and Telecommunications

Wei Liu

Guangdong University of Technology

Wei Huang

Nanjing Tech University

Wensheng Yan

Hangzhou Dianzi University

Weiwei Mao

Nanjing University of Posts and Telecommunications

Jianping Yang

Donghua University

Waqar Ahmad

Quzhou University

Cooperative Institutions

Chinese Academy of Sciences

105

Nanjing University of Posts and Telecommunications

103

Hangzhou Dianzi University

Huazhong University of Science and Technology

University of Chinese Academy of Sciences

The Synergetic Innovation Center for Advanced Materials

Zhejiang University

Wuhan National Laboratory for Optoelectronics

Nanjing University

Xi'an Jiaotong University

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Self-assembled monolayers in perovskite solar cells

Journal of Semiconductors (2021)

Liang Chu Liming Ding

Self-assembled monolayer

10.1088/1674-4926/42/9/090202

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Citations (10)

Influence of Eu and Sr co-substitution on multiferroic properties of BiFeO3

Ceramics International (2016)

Weiwei Mao Wei Chen Xing-Fu Wang Yiyi Zhu Yuhui Ma

Substitution (logic)

10.1016/j.ceramint.2016.05.048

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Citations (65)

Study on Photocatalytic Performance of Ag - AgBr/RGO

Advanced materials research (2013)

Chu Bei Wang Jian Zhou Liang Chu Jian Feng Liu

Abstract. The surface plasmon resonance photocatalysts of Ag-AgBr/RGO were synthesized by chemical precipitation and photochemical reduction method. The samples were characterized by X-ray diffraction and UV-Vis absorption spectroscopy. The photocatalytic activities of catalysts were studied using the photocatalytic degradation of helianthine as a probe reaction. The results showed that the degradation rate of 10 mg/L helianthine reached 95% after 60 min of visible light irradiation.

Degradation

Visible spectrum

10.4028/www.scientific.net/amr.662.163

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Citations (2)

Solution‐processed Nonstoichiometry NiOx Nanocrystal Aggregations for Supercapacitor Electrodes

Zeitschrift für anorganische und allgemeine Chemie (2020)

Yan Sun Jiahui Liu Liang Chu Xing’ao Li

Nickel oxide (NiOx) has been considered as one of the most promising electrode materials for electrochemical supercapacitors because of its exceptional redox and charge storage characteristic. Here, the nonstoichiometry NiOx nanocrystals were synthesized by a room‐temperature chemical precipitation method with the following annealing process. The stoichiometric ratio and morphology of the NiOx nanocrystals were controlled by annealing Ni(OH) 2 nanoparticles under different temperatures. At 270 ○ C annealing process, the NiOx nanocrystals get together to aggregations, which not only have large specific surface area, but also have relatively long charge transfer channels. Meanwhile, with increasing temperature beyond 270 ○ C, Ni 2+ active sites in the nonstoichiometry NiOx decrease. Furtherly, the NiOx nanocrystal aggregations show the superior electrochemical performance with a specific capacitance of 332 F · g –1 at a current density of 1 A · g –1 . In addition, the stability of Coulombic efficiency can still retain 91.3 % after 500 cycle.

Stoichiometry

10.1002/zaac.202000033

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Citations (1)

Ethanol addition for morphology regulation of TiO₂ nanorod arrays towards efficient hole-conductor-free perovskite solar cells

Functional Materials Letters (2018)

Yijie Wang Yingxiu Li Zhirang Guo Wei Liu Rui Zhang

TiO 2 nanorod arrays (NAs) were synthesized with different morphology based on ethanol addition in the TiO 2 precursors for efficient hole-conductor-free perovskite solar cells (PSCs). The morphology and optical properties of samples based on TiO 2 NAs prepared with a different amount of ethanol added in TiO 2 precursors were analyzed. The results indicated that ethanol addition in TiO 2 precursors help regulate the morphology of TiO 2 NAs and improve the photovoltaic performance of the PSCs based on TiO 2 NAs. Finally, the carbon-based PSCs with 96[Formula: see text]nm TiO 2 NAs in diameter by 1[Formula: see text]mL of ethanol addition achieved the optimal performance with a power conversion efficiency (PCE) of 11.86%. The results can offer inspiration for performance improvement of PSCs based on TiO 2 NAs.

Nanorod

Morphology

10.1142/s1793604718500807

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Citations (4)

A Facile and Green Approach to Synthesize Mesoporous Anatase TiO₂ Nanomaterials for Efficient Dye-Sensitized and Hole-Conductor-Free Perovskite Solar Cells

ACS Sustainable Chemistry & Engineering (2018)

Liang Chu Jie Zhang Wei Liu Rui Zhang Jian Yang

Mesoporous anatase TiO2 nanomaterials (MATNs) with both large specific surface areas and structural coherence are highly desirable to achieve excellent physicochemical properties for photovoltaic applications, but the existing synthesis methods either need templates or cause pollution. Herein we report a simple, template-free, and green approach to synthesize MATNs consisting of interconnected nanoparticles. The Ti-complex intermediates were first prepared using titanium isopropoxide and acetic acid in a solvothermal reaction, which went through a morphology transformation sequence of nanowires, microspheres, and microflowers with a prolonged reaction time. Then the Ti-complex intermediates were cracked into MATNs under annealing, which were applied in dye-sensitized solar cells (DSSCs) and hole-conductor-free perovskite solar cells (HPSCs). The mesoporous anatase TiO2 nanowire-based DSSCs achieved a high power conversion efficiency (PCE) up to 7.78% because of both a high dye-adsorption capacity and long charge-transfer channels, while the PCE based on the P25 photoelectrodes is 6.61%. The further application of mesoporous anatase TiO2 nanowires in HPSCs achieved an improved PCE of 8.52%, compared to 6.78% for cells prepared using the P25 electrodes.

Nanomaterials

10.1021/acssuschemeng.8b00607

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Citations (37)

Formation of short three dimensional porous assemblies of super hydrophobic acetylene black intertwined by copper oxide nanorods for a robust counter electrode of DSSCs

RSC Advances (2015)

Waqar Ahmad Liang Chu Majid Raissan Al-bahrani Zhichun Yang Siliang Wang

In this study, we synthesized monolithic copper-oxide nanorods (CuO-NRs) and doped into active super hydrophobic acetylene black (AB) nanocrystals via a fast solvation method.

Nanorod

Auxiliary electrode

Acetylene

Copper oxide

10.1039/c5ra02730f

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Citations (9)

Enhancing the Performance of Inverted Perovskite Solar Cells via Grain Boundary Passivation with Carbon Quantum Dots

ACS Applied Materials & Interfaces (2018)

Yuhui Ma Heyi Zhang Ye-Wei Zhang Ruiyuan Hu Mao Fa Jiang

Nonradiative recombination, the main energy loss channel for open circuit voltage ( Voc), is one of the crucial problems for achieving high power conversion efficiency (PCE) in inverted perovskite solar cells (PSCs). Usually, grain boundary passivation is considered as an effective way to reduce nonradiative recombination because the defects (uncoordinated ions) on grain boundaries are passivated. We added the hydroxyl and carbonyl functional groups containing carbon quantum dots (CQDs) into a perovskite precursor solution to passivate the uncoordinated lead ions on grain boundaries. Higher photoluminescence intensity and longer carrier lifetime were demonstrated in the perovskite film with the CQD additive. This confirmed that the addition of CQDs can reduce nonradiative recombination by grain boundary passivation. Additionally, the introduction of CQDs could increase the thickness of the perovskite film. Consequently, we achieved a champion device with a PCE of 18.24%. The device with CQDs retained 73.4% of its initial PCE after being aged for 48 h under 80% humidity in the dark at room temperature. Our findings reveal the mechanisms of how CQDs passivate the grain boundaries of perovskite, which can improve the efficiency and stability of PSCs.

Passivation

Perovskite solar cell

Quantum Efficiency

Carrier lifetime

10.1021/acsami.8b18867

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Citations (163)

Modulation of Buried Interface by 1‐(3‐aminopropyl)‐Imidazole for Efficient Inverted Formamidinium‐Cesium Perovskite Solar Cells

Small (2023)

Yu Wang Jingchuan Ye Jiaxing Song Liang Chu Yue Zang

Abstract Considering the direct influence of substrate surface nature on perovskite (PVK) film growth, buried interfacial engineering is crucial to obtain ideal perovskite solar cells (PSCs). Herein, 1‐(3‐aminopropyl)‐imidazole (API) is introduced at polytriarylamine (PTAA)/PVK interface to modulate the bottom property of PVK. First, the introduction of API improves the growth of PVK grains and reduces the Pb 2+ defects and residual PbI 2 present at the bottom of the film, contributing to the acquisition of high‐quality PVK film. Besides, the presence of API can optimize the energy structure between PVK and PTAA, which facilitates the interfacial charge transfer. Density functional theory (DFT) reveals that the electron donor unit (R‐C ═ N) of the API prefers to bind with Pb 2+ traps at the PVK interface, while the formation of hydrogen bonds between the R‐NH 2 of API and I − strengthens the above binding ability. Consequently, the optimum API‐treated inverted formamidinium‐cesium (FA/Cs) PSCs yields a champion power conversion efficiency (PCE) of 22.02% and exhibited favorable stability.

Formamidinium

Caesium

10.1002/smll.202304273

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Citations (16)

Enabling Low‐Noise, High‐Detectivity, Stable, and Flexible Perovskite Mesh Nanowire Photodetectors by Phenylethylamine Iodine Doping Strategy

Advanced Optical Materials (2024)

Dingjun Wu Yapeng Tang Bin Ren Liang Chu Hao Wang

Abstract The poor stability, high noise, and low detectivity ( D * ) of perovskite mesh nanowire (PMN) photodetectors (PDs) seriously hinder their practical applications. Here, a phenylethylamine iodine doping strategy (PIDS) is introduced to solve these problems. The PIDS leads to the formation of 2D perovskite PEA 2 MA x‐1 Pb x I 3x+1 (PEA = phenylethylamine, MA = methylamine) within MAPbI 3 PMN, which not only prevents water and oxygen erosion to thwart PMN degradation but also inhibits the transport of dark state carriers to reduce dark current. As a result, the noise, D * , and stability of the PMN PD are simultaneously improved. The device exhibits low noise current (7.61 × 10 −15 A Hz −1/2 ) and high D * of 3.2 × 10 14 Jones, the highest D * value for PMN PDs reported to date. Moreover, the unpacked device sustains 100% of its initial performance after 2880 h of storage in the air (45–55% humidity), enabling it as the most stable MAPbI 3 perovskite micro/nanostructure PD reported to date. Furthermore, the flexible device with PIDS exhibits comparable performance to that of the rigid device as well as great mechanical stability. Finally, the flexible device with PIDS demonstrates excellent optical imaging capability and a higher precision optical imaging potential than the commercial silicon photodiode S2386.

Photodiode

10.1002/adom.202401829

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Citations (0)