Review
Chemistry, Physical
Alessandro Caiazzo, Rene A. J. Janssen
Summary: This review discusses the toolbox and methods used for high efficiency solar cells based on Ruddlesden-Popper perovskites.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Qian Cheng, Boxin Wang, Gaosheng Huang, Yanxun Li, Xing Li, Jieyi Chen, Shengli Yue, Kang Li, Hong Zhang, Yuan Zhang, Huiqiong Zhou
Summary: This study investigates the residual strain in a two-dimensional Ruddlesden-Popper perovskite film and finds that the spacer cations contribute to the residual strain. By strain relaxation, the film quality is improved, leading to enhanced efficiency and good stability in unstable environments.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Qiang Fu, Mingqian Chen, Qiaohui Li, Hang Liu, Rui Wang, Yongsheng Liu
Summary: By using a selenophene-based spacer, researchers have successfully developed stable and efficient 2D RP perovskite solar cells. They achieved efficient electron extraction and transport by optimizing the perovskite film and using a transport layer. The study shows that the selenophene-based spacer significantly improves the conversion efficiency and stability of 2D RP perovskite solar cells.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Xiyue Dong, Mingqian Chen, Rui Wang, Qin Ling, Ziyang Hu, Hang Liu, Yufei Xin, Yang Yang, Jian Wang, Yongsheng Liu
Summary: A concept of quantum confinement breaking in 2D perovskites is proposed using organic semiconductor spacers based on theoretical calculation and experimental results. Intensive orbital coupling is found in (BThMA)(2)PbI4, resulting in the breaking of the multiple quantum well structure, while no orbital interactions exist in (BPhMA)(2)PbI4. The (BThMA)(2)MA(n)(-1)Pb(n)I(3)(n)(+1) (n = 5) perovskite-based device exhibits an outstanding power conversion efficiency (PCE) of 18.05%, which is much higher than that of the BPhMA-based device (PCE = 12.69%) and among the best efficiency in 2D PSCs based on long conjugated spacers.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Linfang Yan, Junjie Ma, Pengwei Li, Shuangquan Zang, Liyuan Han, Yiqiang Zhang, Yanlin Song
Summary: This article summarizes the recent advances in carrier behavior of 2D Ruddlesden-Popper perovskite solar cells (PSCs) and provides guidelines and strategies for enhancing carrier transport.
ADVANCED MATERIALS
(2022)
Article
Energy & Fuels
Yi Zheng, Shan-Ci Chen, Yunlong Ma, Qingdong Zheng
Summary: 2D perovskites are promising materials for solar cells due to their stability and diversity. The organic spacer cation, 2-furfurylammonium (FuMA(+)), plays a crucial role in the stability and performance of 2D perovskites. Thin films of (FuMA)(2)(MA)(4)Pb5I16 were successfully synthesized with increased crystal size and enhanced orientation, leading to a significant improvement in the efficiency of 2D perovskite solar cells. Moreover, these perovskite films can be prepared in ambient air and show high power conversion efficiency (PCE) even at 30% relative humidity.
Article
Chemistry, Multidisciplinary
Junsang Cho, Preethi S. Mathew, Jeffrey T. DuBose, Prashant Kamat
Summary: 2D lead halide perovskites with tunable bandgap and enhanced chemical stability are useful for designing optoelectronic devices. Reducing dimensionality can increase resistance to light-induced ion migration, but also decreases the efficiency of halide ion segregation and segregation rate constant, leading to a decrease in charge-carrier lifetime.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Liangliang Min, Wei Tian, Fengren Cao, Jun Guo, Liang Li
Summary: This research successfully controlled the phase distribution of 2D perovskites using a solvent additive method and hot-casting process, which improved photoresponse of devices. The optimized device showed high performance, stability, and fast response speed in optical-electronic conversion.
ADVANCED MATERIALS
(2021)
Article
Energy & Fuels
Yi Wei, Baoquan Chen, Fan Zhang, Yuyang Tian, Xichuan Yang, Bin Cai, Jijun Zhao
Summary: The study aimed to simultaneously enhance the stability and efficiency of perovskite solar cells by tuning the organic components in 2D Ruddlesden-Popper perovskites (2D-RPPs). By investigating the influence of different cations on film properties and device performance, the authors achieved a high efficiency of 16.15% for the (FPEA)(2)(FA)(8)Pb9I28 solar cell. Notably, the film exhibited good humidity stability and enhanced thermal stability, maintaining 95% of its efficiency after 2112 hours of exposure to ambient air. This study demonstrates that strategically designing organic compositions can lead to improved performance of 2D-RPPs, paving the way for commercialization of 2D-RPP devices.
Article
Chemistry, Multidisciplinary
Weichuan Zhang, Xianxin Wu, Qian Cheng, Boxin Wang, Saud Uz Zafar, Bing Han, Jianqi Zhang, Hong Zhang, Xinfeng Liu, Yuan Zhang, Huiqiong Zhou
Summary: Introducing a GUASCN inhibitor can effectively inhibit the growth of intermediates and improve the power conversion efficiency of quasi-2D perovskite solar cells. The unencapsulated devices retain high efficiency under different conditions.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Kang Li, Shengli Yue, Xing Li, Nafees Ahmad, Qian Cheng, Boxin Wang, Xuning Zhang, Shilin Li, Yanxun Li, Gaosheng Huang, Hui Kang, Tong Yue, Saud Uz Zafar, Huiqiong Zhou, Lina Zhu, Yuan Zhang
Summary: This study reports a method of using two organic ammonium salts to passivate surface defects in perovskite films. It is found that using diammonium BDAI(2) can effectively reduce defect density and enhance interfacial charge extraction and suppression of surface charge recombination. This leads to higher power conversion efficiency and material stability.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jiahui Hou, Yangchun Yu, Sanam Attique, Bingqiang Cao, Shikuan Yang
Summary: The room-temperature saturation recrystallization (RTSR) method, used for preparing all-inorganic lead halide perovskite nanocrystals, can result in complex product compositions influenced by factors such as solution pH and protonation tendencies of amines. Different conditions can lead to the formation of various products, including PbBr2, 2D Ruddlesden-Popper perovskites, and laurionite Pb(OH)Br.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yuchen Miao, Jun Wu, Xiaorong Qi, Liu Yang, Xu Wang, Fei Zheng, Feiyu Zhao, Shareen Shafique, Yuejin Zhu, Ziyang Hu
Summary: Based on the hot-casting method, uniform and compact 2D-3D gradient perovskite thin films were prepared by investigating the effects of substrate temperature on the surface morphology and internal phases distribution of 2D perovskite films. The gradient phase distribution along the longitudinal direction of the thin film improves the photosensitivity of the photodiode over the whole visible spectrum range.
Article
Chemistry, Physical
Chaochao Qin, Liuhong Xu, Zhongpo Zhou, Jian Song, Shuhong Ma, Zhaoyong Jiao, Yuhai Jiang
Summary: Quasi-two-dimensional perovskites have unique excitonic properties and are promising materials for optoelectronic applications. However, the influence of organic spacer cations on the structural distortions and charge screening between perovskite layers is still not well understood. This study presents the carrier transport characteristics of Dion-Jacobson and Ruddlesden-Popper type perovskite layers. The results provide valuable insights for further tuning the optoelectronic properties of layered perovskite devices.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Jianghu Liang, Zhanfei Zhang, Ying Huang, Qi Xue, Yiting Zheng, Xueyun Wu, Congcong Tian, Yi Zhang, Yimeng Wang, Zhenhua Chen, Chun-Chao Chen
Summary: This study demonstrates that using bulky alkylammonium spacer cations in 2D perovskites helps in preparing high-quality phase-pure alpha-FAPbI(3) perovskite films, which leads to improved efficiency and stability of perovskite solar cells. The deprotonation process of the spacer cations during annealing removes the in situ generated 2D perovskites from the film, ultimately affecting the performance and stability of the solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jichi Liu, Chongchong Wu, Ian D. Gates, Baohua Jia, Zihang Huang, Tianyi Ma
Summary: Aqueous supercapacitors are considered promising for commercial energy storage devices due to their safety, low cost, and environmental friendliness. However, the challenge of achieving both long electrode lifespan and qualified energy-storage property has hindered their practical application. In this study, an electrode-electrolyte integrated optimization strategy is developed to meet real-life device requirements. By optimizing the nanomorphology and surface chemistry of the tungsten oxide anode, along with the design of a hybrid electrolyte, record-breaking durability and stable operation under extreme conditions are achieved. These results demonstrate the possibility of replacing commercial organic energy storage devices with aqueous counterparts for various daily applications.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Review
Optics
Yuning Zhang, Jiayang Wu, Linnan Jia, Yang Qu, Yunyi Yang, Baohua Jia, David J. Moss
Summary: Integrated photonic devices operating via optical nonlinearities offer a powerful solution for all-optical information processing, and graphene oxide (GO) has attracted significant attention for its large optical nonlinearity and facile fabrication processes. This paper reviews the applications of GO to nonlinear integrated photonics, including its optical properties, fabrication technologies, and the state-of-the-art GO nonlinear integrated photonic devices. The challenges and future opportunities in this field are also discussed.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Guiyuan Cao, Han Lin, Baohua Jia, Xiaocong Yuan, Michael Somekh, Shibiao Wei
Summary: Traditional OAM generation devices are bulky and limited to creating OAM with one specific topological charge. This study demonstrates a tunable multi-topological charge OAM generator based on an ultrathin integrable graphene metalens. Different topological charges can be designed on different focal planes and dynamically changed by stretching the graphene metalens. This design method paves the way for miniaturization and integration of OAM beam-type photonic devices.
Review
Chemistry, Physical
Mehri Ghasemi, Songyang Yuan, Jiandong Fan, Baohua Jia, Xiaoming Wen
Summary: Metal halide perovskites (MHPs) have attracted attention due to their remarkable properties, but grain boundaries in polycrystalline thin-films (TFs) limit their performance. MHP single crystals (SCs) with fewer or no grains are promising for superior optoelectronic applications. However, research on MHP SC solar cells lags behind TF solar cells. This review sets guidelines for the development of MHP SC solar cells and discusses the challenges, harmful impacts, and strategies to improve their performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Zexing Wu, Pengfei Yang, Qichang Li, Weiping Xiao, Zhenjiang Li, Guangrui Xu, Fusheng Liu, Baohua Jia, Tianyi Ma, Shouhua Feng, Lei Wang
Summary: Oxygen vacancies-enriched black TiO2 supported sub-nanometer Pt clusters (Pt/TiO2-O-V) with metal support interactions are successfully designed through solvent-free microwave and low-temperature electroless methods. The created oxygen vacancies and Pt clusters show synergistic effects for optimizing the reaction kinetics, leading to remarkable electrocatalytic performance of Pt/TiO2-O-V. This work provides a quick synthetic strategy for preparing black titanium dioxide based nanomaterials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Physics, Applied
Ying Wang, Qingfeng Gui, Peng Wang, Wei Guan, Xingchen Dong, Haoyu Wang, Hongzhou Dong, Lina Sui, Zhixing Gan, Lifeng Dong, Liyan Yu
Summary: Despite extensive efforts, there is still a high demand for lead-free, low toxicity, efficient, and stable blue fluorescent materials. Cs2NaInCl6 double perovskite (DP) is considered a promising candidate for solid-state lighting due to its low toxicity and good stability. Here, Mg-doped Cs2NaInCl6 DPs were prepared using a solvothermal method. The Mg2+-doped Cs2NaInCl6 DPs showed independent blue photoluminescence (PL) at 445 nm with a large Stokes shift (129.5 nm), long PL lifetime (10.44 μs), and a huge Huang-Rhys factor (40.2), indicating the presence of self-trapped excitons. After optimizing the reaction conditions and doping concentration, a high photoluminescence quantum yield of 86.98% was achieved. Moreover, the Mg-doped Cs2NaInCl6 DPs exhibited excellent resistance to irradiation and moisture, which can address the limitations of current blue emitting materials.
APPLIED PHYSICS LETTERS
(2023)
Article
Energy & Fuels
Jintao Zhao, Feng Nan, Lei Zhou, Haoyun Huang, Guanghong Zhou, Yu-fu Zhu, Qingdong Ou
Summary: Daytime radiative coolers provide a sustainable and energy-efficient method for passive cooling, but their color restricts their practical applications. This study presents a colored, polymer film with composite opal photonic crystal structure that achieves both coloration and efficient radiative cooling.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Nanoscience & Nanotechnology
Ge Yan, Xiaodong Sun, Yu Zhang, Hui Li, Hongwei Huang, Baohua Jia, Dawei Su, Tianyi Ma
Summary: A novel metal-free 2D/2D van der Waals heterojunction was successfully constructed by integrating a two-dimensional COF with ketoenamine linkage and defective hexagonal boron nitride. The presence of VDW heterojunction and introduced defects facilitated charge carriers separation and provided more reactive sites. The resulting heterojunction exhibited excellent solar energy catalytic activity for water splitting, surpassing the performance of pristine COF and other metal-free-based photocatalysts reported to date.
NANO-MICRO LETTERS
(2023)
Article
Thermodynamics
Miao Liu, Wenjing Ning, Junbo Yang, Yuankun Zhang, Zhuosheng Han, Ge Meng, Chunsheng Guo, Han Lin, Baohua Jia
Summary: This study proposes a novel composite pore former comprising NaCl and g-C3N4 for fabricating high-performance multi-morphology porous wicks. The synergistic effect of these pores increases the wicks' porosity and reduces flow resistance, enabling them to exhibit high comprehensive performance. The wicks also have ultralow thermal resistance and exceptional anti-gravity performance.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Ming Meng, Lun Yang, Jing Yang, Yu Zhu, Chunyang Li, Hongjun Xia, Honglei Yuan, Meng Zhang, You Zhao, Fengshou Tian, Jitao Li, Kuili Liu, Lei Wang, Zhixing Gan
Summary: This study presents an innovative two-dimensional lateral anatase-rutile TiO2 phase junctions with controllable oxygen vacancies on Ti mesh. The junctions exhibit high-efficiency charge separation and enriching active sites, while the interfacial oxygen vacancies extend visible light response and accelerate the separation and transfer of charges. The optimized photoelectrode shows significantly enhanced photocurrent density and incident photon to current conversion efficiency. This research provides new insights for developing novel 2D lateral phase junctions for photoelectrochemical applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Wei Zhang, Wentao Li, Qiaoling Wu, Qin Zhao, Xiaojun He, Daliang Liu, Baohua Jia, Jieshan Qiu, Tianyi Ma, Ying Sun
Summary: In this work, a novel bismuth molybdate nanocatalyst with sufficient oxygen vacancies and high Bi concentration is synthesized, and it is demonstrated to be an excellent electrocatalyst for N-2 electroreduction reaction (NRR). The as-synthesized BiMoO-OVs shows a high Faradaic efficiency of 16.38% and a NH3 yield rate of 3.65 μg h(-1) cm(-2) at -0.4 V (vs RHE) in neutral electrolyte, outperforming most Bi-based NRR nanocatalysts. Importantly, it also exhibits excellent electrochemical durability for at least 24 hours. This work provides a simple and effective strategy for designing low-cost and high-performance Bi-based catalysts.
ADVANCED MATERIALS INTERFACES
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Yang Qu, Yunyi Yang, Jiayang Wu, Yuning Zhang, Linnan Jia, Houssein El Dirani, Romain Crochemore, Corrado Sciancalepore, Pierre Demongodin, Christian Grillet, Christelle Monat, Baohua Jia, David J. Moss
Summary: The power-sensitive photo-thermal tuning (PTT) behavior of graphene oxide (GO) integrated on the top surface of silicon nitride (SiN) waveguides is experimentally investigated. The thresholds for reversible and permanent GO reduction are measured for SiN waveguide coating with monolayer GO. Three reduction stages are identified based on the reversibility of the reduction process. The study confirms that the PTT is primarily determined by the average input power, regardless of the type of laser used.
INTEGRATED OPTICS: DEVICES, MATERIALS, AND TECHNOLOGIES XXVII
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Yuning Zhang, Jiayang Wu, Yunyi Yang, Yang Qu, Linnan Jia, Houssein El Dirani, Romain Crochemore, Corrado Sciancalepore, Pierre Demongodin, Christian Grillet, Christelle Monat, Baohua Jia, David Moss
Summary: Graphene oxide (GO) films integrated on silicon nitride (Si3N4) waveguides through a solution-based method enhance the spectral broadening and self-phase modulation (SPM) effect. The GO-coated waveguides show significantly improved nonlinear performance compared to the uncoated waveguide, resulting in a broadening factor of up to 3.4 and an improvement in the waveguide nonlinear parameter by a factor of up to 18.4. The high Kerr nonlinearity of GO contributes to the enhancement of SPM in Si3N4 waveguides.
INTEGRATED OPTICS: DEVICES, MATERIALS, AND TECHNOLOGIES XXVII
(2023)
Article
Chemistry, Multidisciplinary
Lihao Zhang, Yufei Chen, Yue Cao, Sunlong Li, Weipeng Lu, Wei Cao, Jialiang Zhu, Weiting Bao, Ming Shao, Zhixing Gan, Yunsong Di, Fangjian Xing, Xiang Li, Liang Zhang, Cihui Liu
Summary: Increasing attention has been given to superwettability and its potential applications. A new approach has been proposed for flexible, self-assembled superhydrophobic surfaces using photonic crystal films. The resulting hierarchical film offers a promising solution for creating durable and flexible superhydrophobic surfaces on various substrates.
Article
Optics
Yangyu Liu, Luyao Li, Xiaozhao Song, Wei Zhou, Qiang Zhu, Guangmiao Liu, Xiaodong Xu, Haotian Wang, Xue Cao, Yishan W. Ang, Baohua Jia, Deyuan Shen
Summary: In this study, we generated cylindrical vector pulsed beams by using a c-cut Tm:CaYAlO4 crystal and SESAM in a folded six-mirror cavity. By adjusting the distance between the curved cavity mirror (M4) and the SESAM, both radially polarized beam and azimuthally polarized beam were generated around 1962 nm and the two vectorial modes could be freely switched in the resonator. When the pump power was increased to 7 W, stable radially polarized Q-switched mode-locked (QML) cylindrical vector beams were obtained with an output power of 55 mW, sub-pulse repetition rate of 120.42 MHz, pulse duration of -0.5 ns, and the beam quality factor M2 of -2.9. To our knowledge, this is the first report of radially and azimuthally polarized beams in the 2 μm wavelength solid-state resonator.
