Article
Chemistry, Multidisciplinary
Zheng Zhang, Muhammad Akmal Kamarudin, Ajay Kumar Baranwal, Gaurav Kapil, Shahrir Razey Sahamir, Yoshitaka Sanehira, Mengmeng Chen, Liang Wang, Qing Shen, Shuzi Hayase
Summary: Lead-free tin perovskite solar cells (PKSCs) have low efficiency due to rough surface morphology and high number of defects. A posttreatment strategy using sequential passivation with acetylacetone (ACAC) and ethylenediamine (EDA) is proposed to reduce trap density, enlarge grain size, and regulate energy level. The study achieves a promising 13% efficiency with better stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Miguel Albaladejo-Siguan, David Becker-Koch, Elizabeth C. Baird, Yvonne J. Hofstetter, Ben P. Carwithen, Anton Kirch, Sebastian Reineke, Artem A. Bakulin, Fabian Paulus, Yana Vaynzof
Summary: Light-harvesting devices made from lead sulfide quantum dot absorbers have promising applications in third-generation photovoltaics. Passivating the quantum dot surfaces and managing the excess lead halide can improve device performance and stability.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Hang Su, Jing Zhang, Yingjie Hu, Yuying Yao, Xinxin Zheng, Yutong She, Binxia Jia, Lili Gao, Shengzhong (Frank) Liu
Summary: Based on theoretical calculations, it is found that enhancing the electrostatic potential of passivators can improve the passivation effect and adsorption energy between charged defects and passivators. Therefore, an electrostatic potential modulation (EPM) strategy is developed to design passivators for highly efficient and stable perovskite solar cells (PSCs). Through experiments, two designed passivators show good passivation effects, and the EPM strategy provides a principle for passivator design and allows passivation to be controllable, which may advance the optimization and commercialization of perovskite solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Chuang Sun, Lei Xu, Xilin Lai, Zhengping Li, Ming He
Summary: This Review Article summarizes recent impressive advances in passivating defects in organic-inorganic halide perovskite (OIHP) solar cells and discusses the future prospects of developing high-efficiency and long-stability OIHP solar cells in terms of defect management.
ENERGY & ENVIRONMENTAL MATERIALS
(2021)
Article
Chemistry, Physical
Yao Zhang, Chunyan Li, Enbing Bi, Tao Wang, Peng Zhang, Xudong Yang, Han Chen
Summary: By constructing a low-dimensional halide/perovskite heterostructure and molecular engineering of the organic spacer, the photovoltaic performance of inverted perovskite solar cells (PSCs) has been significantly improved with high efficiency and stability.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xuejie Zhu, Minyong Du, Jiangshan Feng, Hui Wang, Zhuo Xu, Likun Wang, Shengnan Zuo, Chenyu Wang, Ziyu Wang, Cong Zhang, Xiaodong Ren, Shashank Priya, Dong Yang, Shengzhong (Frank) Liu
Summary: In this study, DMIMPF6 ionic liquid was used to passivate surface defects of perovskite, resulting in increased solar cell efficiency and enhanced long-term stability of the device.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Qing Tian, Guozhen Ding, Yuting Cai, Zicheng Li, Xueyuan Tang, Rong-Jun Xie, Peng Gao
Summary: This study focuses on improving the photovoltaic performance of perovskite solar cells (PSCs) by incorporating iodine-rich CsPbI3 quantum dots (QDs) to reduce nonradiative recombination centers and optimize energy alignment. The modified QDs successfully achieved high-efficiency planar PSCs with an efficiency exceeding 22% and higher long-term stability, retaining over 91% of its initial power conversion efficiency after 39 days.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Qian Cheng, Haoran Xia, Xing Li, Boxin Wang, Yanxun Li, Xuning Zhang, Hong Zhang, Yuan Zhang, Huiqiong Zhou
Summary: The interface modification based on organic spacer cations has been shown to enhance the performance of 3D perovskite solar cells by promoting charge transport and extraction while suppressing charge trapping and recombination. By utilizing the optimal spacer cation phenylpropylammonium iodide (PPAI), the 3D/2D perovskite devices achieved a high power conversion efficiency of 22.57% with improved stability under external stresses.
Review
Chemistry, Multidisciplinary
Lei Huang, Yan-Hui Lou, Zhao-Kui Wang
Summary: Perovskite solar cells (PSCs) are considered as the best alternative to silicon solar cells due to their low cost and high power conversion efficiency (PCE). However, the commercialization of PSCs has been hindered by issues such as poor stability, high toxicity, and complex preparation process. Passivation strategies, including surface and bulk passivation, have been successfully employed to improve the performance of PSCs. This article provides an in-depth review of recent advances in passivating the buried interface of PSCs, focusing on the perovskite layer, buried interlayer, and transport layer. The effectiveness of passivating the buried interface is demonstrated using various salts, organics, and 2D materials. The classification of the transport layer into electron and hole transport layers helps to understand the substances that generate passivating effects and guide future research in buried interface passivation.
Article
Nanoscience & Nanotechnology
Guoqing Tong, Luis K. Ono, Yuqiang Liu, Hui Zhang, Tongle Bu, Yabing Qi
Summary: By adding potassium permanganate in the chemical bath deposition process, high-quality large-area SnO2 films were successfully prepared, leading to enhanced performance of perovskite solar cells (PSCs). Utilizing a multifunctional interface engineering strategy, a power conversion efficiency (PCE) of 21.70% was achieved for lab-scale PSCs, with reduced hysteresis.
NANO-MICRO LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Anat Itzhak, Xu He, Adi Kama, Sujit Kumar, Michal Ejgenberg, Antoine Kahn, David Cahen
Summary: Using RF sputtering to fabricate NiOx and covering it with a NiyN layer in vacuum can improve the efficiency and stability of solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Wenjing Yu, Xiaoran Sun, Mu Xiao, Tian Hou, Xu Liu, Bolin Zheng, Hua Yu, Meng Zhang, Yuelong Huang, Xiaojing Hao
Summary: Lead halide perovskite solar cells have rapidly developed in the past decade, with interface engineering playing a crucial role in optimizing device performance and long-term stability through defect passivation, inhibiting ion migration, optimizing energy band alignment, and morphological control.
Article
Chemistry, Multidisciplinary
Bin Chen, Hao Chen, Yi Hou, Jian Xu, Sam Teale, Koen Bertens, Haijie Chen, Andrew Proppe, Qilin Zhou, Danni Yu, Kaimin Xu, Maral Vafaie, Yuan Liu, Yitong Dong, Eui Hyuk Jung, Chao Zheng, Tong Zhu, Zhijun Ning, Edward H. Sargent
Summary: By utilizing 2D perovskite post-treatments and passivation layers with organic cations, significant enhancements in performance of perovskite solar cells are observed, including increased open-circuit voltage and reduced surface recombination velocity.
ADVANCED MATERIALS
(2021)
Review
Energy & Fuels
Jeferson A. Dias, Silvia H. Santagneli, Sidney J. L. Ribeiro, Younes Messaddeq
Summary: Perovskite quantum dots (PQDs) have significantly improved the operational stability of perovskite solar cells, addressing one of their main drawbacks for applications. The development and challenges of PQD solar cells, including fundamental aspects, device performance, and post-treatment advances, have been discussed. The authors also provide insights on the future of PQD solar cell technology, highlighting the main drawbacks, advantages, and opportunities for research.
Article
Chemistry, Multidisciplinary
Liang Qiao, Tianshi Ye, Pengshuai Wang, Tao Wang, Lin Zhang, Ruitian Sun, Weiyu Kong, Xudong Yang
Summary: By adding potassium hypophosphite, the performance and photostability of perovskite solar cells are improved, leading to an increase in the efficiency of all-perovskite tandem solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Benny Febriansyah, Yongxin Li, David Giovanni, Teddy Salim, Thomas J. N. Hooper, Ying Sim, Daphne Ma, Shoba Laxmi, Yulia Lekina, Teck Ming Koh, Ze Xiang Shen, Sumod A. Pullarkat, Tze Chien Sum, Subodh G. Mhaisalkar, Joel W. Ager, Nripan Mathews
Summary: Through engineering the structures of bulky organic cations, low-dimensional perovskite materials with different dimensions could be obtained. It was found that inorganic architectures with lesser structural distortion play a crucial role in improving the performance of mixed-dimensional perovskites.
MATERIALS HORIZONS
(2023)
Article
Nanoscience & Nanotechnology
Huei Min Chua, Natalia Yantara, Yeow Boon Tay, Suriani Abdul Latiff, Subodh Mhaisalkar, Nripan Mathews
Summary: This study investigates the mitigation of energy level mismatch and exciton quenching caused by PEDOT:PSS in PeLEDs through the addition of work-function-tunable PSS Na to the PEDOT:PSS hole-transport layer (HTL). The addition of 6% PSS Na improves the external quantum efficiency and prolongs the operation stability of blue and sky-blue PeLEDs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Zongkang Li, Jeonghun Yun, Xiaoya Li, Moobum Kim, Jia Li, Donghoon Lee, Angyin Wu, Seok Woo Lee
Summary: Recent advancements in wearable devices have made noninvasive healthcare monitoring possible. This study introduces a power-free smart contact lens that can detect glucose levels through color changes of multiple electrochromic electrodes, eliminating the need for external wireless systems. The device demonstrates high accuracy and reproducibility, making it a potential tool for daily health monitoring without additional power supply or devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Prem Jyoti Singh Rana, Benny Febriansyah, Teck Ming Koh, Anil Kanwat, Junmin Xia, Teddy Salim, Thomas J. N. Hooper, Mikhail Kovalev, David Giovanni, Yeow Chong Aw, Bhumika Chaudhary, Yongqing Cai, Guichuan Xing, Tze Chien Sum, Joel W. Ager, Subodh G. Mhaisalkar, Nripan Mathews
Summary: A method for modifying large-area slot-die-coated perovskite solar cells using a hydrophobic all-organic salt is reported. The organic salt effectively binds to anion and cation vacancies, enhancing the stability of the materials and preventing the ingress of external species and the egress of volatile organic components. The treated cells retain high efficiency after long-term storage and continuous measurement.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiongwei Zhong, Yangfan Shao, Biao Chen, Chuang Li, Jinzhi Sheng, Xiao Xiao, Baomin Xu, Jia Li, Hui-Ming Cheng, Guangmin Zhou
Summary: A three-electrode rechargeable zinc-air battery (T-RZAB) with decoupled cathodes and a zinc-free anode is developed to solve the problems of opposing requirements for oxygen reduction/evolution reactions and zinc corrosion. The T-RZAB exhibits a high discharge capacity per cycle, low voltage gap, and ultralong cycle life. A large T-RZAB with no significant degradation after cycling for 1000 hours is also achieved. Moreover, a T-RZAB pack with high energy density and low cost is assembled.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
M. Thambidurai, Herlina Arianita Dewi, Anil Kanwat, Srilakshmi Subramanian Periyal, Nur Fadilah Jamaludin, Annalisa Bruno, Nripan Mathews, Cuong Dang, Hung D. Nguyen
Summary: A novel ionic liquid (IL) additive, 1-ethyl-3-methylimidazolium chloride (EMIC), has been found to improve the stability of perovskite solar cells (PSCs) by enhancing crystallinity, surface topography, carrier lifetimes, defect density reduction, and interfacial band energy alignment. The EMIC-based PSC achieves a PCE of 20.15% and retains 89% of its initial PCE after 1440 hours of ambient storage (30% RH, 25 degrees C), and retains 65% of its initial PCE after 600 hours of thermal aging (85 degrees C, 10% RH).
JOURNAL OF POWER SOURCES
(2023)
Article
Multidisciplinary Sciences
Qian Lv, Junyang Tan, Zhijie Wang, Peng Gu, Haiyun Liu, Lingxiao Yu, Yinping Wei, Lin Gan, Bilu Liu, Jia Li, Feiyu Kang, Hui-Ming Cheng, Qihua Xiong, Ruitao Lv
Summary: A facile synthesis method for mixed-dimensional heterostructures via oxygen plasma treatments of 2D materials was reported. 1D/2D WO3-x/WSe2 heterostructures exhibited high molecular sensitivity with low detection limit and high enhancement factor. The ultrasensitive performance was attributed to efficient charge transfer induced by the unique structures of 1D WO3-x nanowires and effective interlayer coupling of the heterostructures, as observed by ultrafast transient spectroscopy. This work provides insights on the role of ultrafast charge transfer mechanisms in plasmon-free SERS-based molecular sensing and presents an alternative strategy for the synthesis of 1D nanostructures from 2D materials.
NATURE COMMUNICATIONS
(2023)
Letter
Chemistry, Physical
Jin-Lin Yang, Lingli Liu, Zehua Yu, Pengbo Chen, Jia Li, Putu Andhita Dananjaya, Eng Kang Koh, Wen Siang Lew, Kang Liu, Peihua Yang, Hong Jin Fan
Summary: A 60 nm artificial protective layer called GZH, with a spatial dielectric-metallic gradient composition, is developed through Zn and HfO2 cosputtering. This design effectively suppresses hydrogen evolution and promotes dendrite-free Zn deposition. With stable battery operation at high currents, the full-cell battery delivers a capacity retention of around 75% after 2000 cycles when paired with a vanadate cathode.
ACS ENERGY LETTERS
(2023)
Article
Gastroenterology & Hepatology
Wenhui Zhang, Yifei Huang, Huiling Xiang, LiYao Zhang, Lili Yuan, Xing Wang, Tong Dang, Guo Zhang, Shengjuan Hu, Chuan Liu, Xiuping Zhang, Lijun Peng, Min Gao, Dongli Xia, Jia Li, Ying Song, Xiqiao Zhou, Xingsi Qi, Jing Zeng, Xiaoyan Tan, Mingming Deng, Haiming Fang, Shenglin Qi, Song He, Yongfeng He, Bin Ye, Wei Wu, Jiangbo Shao, Wei Wei, Jianping Hu, Xin Yong, Chaohui He, Jinlun Bao, Yuening Zhang, Rui Ji, Yang Bo, Wei Yan, Hongjiang Li, Yong Wang, Yanling Wang, Mengmeng Li, Jia Lian, Chang'en Liu, Yunhai Wu, Ye Gu, Yan Wang, Ping Cao, Bin Wu, Limei Ren, Hongduo Pan, Yunxiao Liang, Shuni Tian, Lin Lu, Yanfei Fang, Pan Jiang, Zhenbei Liu, Aimin Liu, Lili Zhao, Shuang Li, Jinggui Qiao, Lihui Sun, Mengyu Li, Chengwen Fang, Hao Chen, Zibin Tian, Gaoyang Lin, Xuanhui Huang, Jitao Chen, Ying Deng, Muhan Lv, Jingyuan Liao, Lijiu Zhang, Junyu Lu, Suhua Wu, Xiaocui Yang, Wenwei Guo, Jianbo Wang, Chao Chen, Erjiong Huang, Yuehua Yu, Ming Yang, Shuangping Cheng, Yang Yang, Xiaoli Wu, Limaocai Rang, Ping Han, Yanmin Zhang, Xiaoguo Li, Fengmei Wang, Mark Edward McAlindon, Wai-Kay Seto, Chuanzhu Lv, Don C. Rockey, Xiaolong Qi
Summary: This study aimed to determine the optimal timing for endoscopy in patients with cirrhotic acute variceal bleeding (AVB). The results suggest that performing endoscopy within 6-12 or within 24 hours of presentation has similar treatment failure outcomes for patients with cirrhotic AVB.
HEPATOLOGY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
E. Erdenebileg, N. Tiwari, F. U. Kosasih, H. A. Dewi, L. Jia, N. Mathews, S. Mhaisalkar, A. Bruno
Summary: Metal oxides, such as non-stoichiometric nickel oxide (NiOx), have been widely used in thin film solar cells for their suitable energy band levels, high charge carrier mobilities, and excellent stability. In this study, we demonstrate the fabrication of co-evaporated perovskite solar cells (PSCs) with sputtered NiOx as the hole transport layer. We investigate the impact of sputtering conditions on the physical properties of NiOx and achieve highly efficient PSCs using optimized conditions.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Rongmei Zhao, Peng Wang, Linqing Wang, Yuanju Zhao, Chenghao Ge, Licheng Sun, Lin Xie, Yong Hua
Summary: This study introduces an innovative approach using an in situ combined dual-hole transport layer with TIPS-Pn to improve the performance of perovskite solar cells (PSCs). The results show that this approach effectively extracts and transports hole carriers, resulting in a significant increase in the average power conversion efficiency of PSCs. Additionally, it improves the stability of PSCs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jin-Lin Yang, Zehua Yu, Jiawen Wu, Jia Li, Liangyuan Chen, Tuo Xiao, Tao Xiao, Da-Qian Cai, Kang Liu, Peihua Yang, Hong Jin Fan
Summary: A hetero-polyionic hydrogel is designed as the electrolyte for Zn-I-2 batteries, which effectively alleviates the shuttle effect on the cathode side and prevents surface corrosion on the anode side, leading to remarkable cycling stability and low capacity decay.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jia Li, Xiaoya Li, Donghoon Lee, Jeonghun Yun, Angyin Wu, Cheng Jiang, Seok Woo Lee
Summary: The thermally regenerative electrochemical cycle (TREC) is an efficient method to convert low-grade heat into electricity, with a high temperature coefficient (& alpha;) being crucial for its energy conversion efficiency. This study demonstrates a significant improvement in the & alpha; of a Prussian blue analogue (PBA)-based electrochemical cell by incorporating poly(4-styrenesulfonic acid) (PSS) into the electrolyte. The addition of PSS influences the ion hydration structure and increases the entropy change (& UDelta;S) during ion intercalation in PBA, resulting in a high & alpha; of -2.01 mV K-1 and a heat-to-electricity conversion efficiency of 1.83% in the temperature range of 10-40 & DEG;C. This research provides insights into the origin of & alpha; and offers a simple approach to enhance the temperature coefficient for developing highly efficient low-grade heat harvesting systems.
Article
Chemistry, Physical
Xiaoya Li, Angyin Wu, Jia Li, Zongkang Li, Donghoon Lee, Seok Woo Lee
Summary: The thermopower improvement is essential for enhancing the energy conversion efficiency of a thermally regenerative electrochemical cycle (TREC). In this study, the researchers utilized the coordinating nature of anions to modulate the desolvation and reorganization entropy changes during the redox reaction in the aqueous electrochemical system. They found that the preference of anions for increased thermopower roughly follows the reverse order of the Hofmeister series, with the noncoordinating chaotropic anion ClO(4)(-) enabling the highest thermopower. By leveraging this finding, they demonstrated a TREC system with high thermopower and highlighted the promising potential of TREC for low-grade energy harvesting.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Runtao Wang, Lin Xie, Tai Wu, Chenghao Ge, Yong Hua
Summary: This study demonstrates a simple and effective strategy to improve the performance of perovskite solar cells (PSCs) by constructing a conduction band offset (CBO) with a small spike using an organic small molecule. The modified devices show enhanced photovoltaic performance with a 10.6% increase in power conversion efficiency (PCE) and retain over 94% of the initial PCE after 1800 hours of exposure to N-2. The presence of a moderate spike-like CBO at the interface between the perovskite film and hole transport layer facilitates rapid charge-carrier injection and reduces charge recombination, resulting in increased open-circuit voltage and fill factor.
