Article
Physics, Applied
Ningyu Ren, Chengjun Zhu, Renjie Li, Sayantan Mazumdar, Cong Sun, Bingbing Chen, Qiaojing Xu, Pengyang Wang, Biao Shi, Qian Huang, Shengzhi Xu, Tiantian Li, Ying Zhao, Xiaodan Zhang
Summary: Although perovskite solar cells based on SnO2 have achieved high power conversion efficiency, large-scale fabrication remains a challenge. An atomic layer deposition (ALD) process using H2O2 as an oxygen source is demonstrated, enabling low-temperature deposition and producing highly uniform films. This technology shows potential in both single junction and tandem solar cells.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Kassio P. S. Zanoni, Daniel Perez-del-Rey, Chris Dreessen, Nathan Rodkey, Michele Sessolo, Wiria Soltanpoor, Monica Morales-Masis, Henk J. Bolink
Summary: This study investigates the application of SnO2-based electron transport layers (ETL) in perovskite solar cells (PSCs). It is found that by controlling the deposition parameters of pulsed laser deposition (PLD) technique, SnO2 films with low roughness can be obtained. The concentration of oxygen in the background gas is also shown to affect the number of oxygen vacancies in the film. Solar cells with methyl-ammonium lead iodide perovskite absorber layer and SnO2 ETL deposited by PLD under optimized conditions achieve power conversion efficiencies exceeding 18%, comparable to those with atomic layer deposited SnO2 ETL.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
K. O. Brinkmann, T. Becker, F. Zimmermann, C. Kreusel, T. Gahlmann, M. Theisen, T. Haeger, S. Olthof, C. Tueckmantel, M. Guenster, T. Maschwitz, F. Goebelsmann, C. Koch, D. Hertel, P. Caprioglio, F. Pena-Camargo, L. Perdigon-Toro, A. Al-Ashouri, L. Merten, A. Hinderhofer, L. Gomell, S. Zhang, F. Schreiber, S. Albrecht, K. Meerholz, D. Neher, M. Stolterfoht, T. Riedl
Summary: Multijunction solar cells can surpass the efficiency limits of single-junction devices. Metal halide perovskite solar cells, in combination with silicon and copper indium gallium selenide (CIGS) or as all-perovskite tandems, have shown promising results. Narrow-gap non-fullerene acceptors have also significantly improved the efficiencies of organic solar cells. In this study, perovskite-organic tandem cells with high efficiency and voltage are demonstrated, utilizing optimized charge extraction layers and an ultrathin metal-like indium oxide layer for interconnection. This milestone work outperforms the best perovskite single junctions and is comparable to perovskite-CIGS and all-perovskite multijunctions.
Article
Physics, Multidisciplinary
Can Li, Hongyu Xu, Chongyang Zhi, Zhi Wan, Zhen Li
Summary: In this study, an ultrathin SnO2 layer was used to construct a TiO2/SnO2 double electron transport layer (ETL), which improved the power conversion efficiency (PCE) of perovskite solar cells (PSCs). The ultrathin SnO2 layer enhanced the electrical conductivity of the double layer ETLs, improved band alignment at the ETL/perovskite interface, and promoted charge extraction and transfer. Additionally, the ultrathin SnO2 layer also suppressed nonradiative recombination and improved the stability of the PSCs compared to those with a single TiO2 ETL.
Article
Energy & Fuels
Wei Wang, Zhengzhao Yang, Jiaxin Ding, Jiaqi Kong, Xin Li
Summary: This study improves the performance of inverted flexible perovskite solar cells (FPSCs) by modifying the electron transport layers with APTS molecules. The addition of APTS improves the quality of the PCBM layer and provides nucleating sites for the growth of a conformal tin oxide layer as a buffer layer. The fabricated FPSCs show high efficiency and good environmental stability.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Multidisciplinary
Zhijun Xiong, Long Wu, Xiaoheng Zhou, Shaofei Yang, Zhiliang Liu, Wentao Liu, Jie Zhao, Wei Li, Cao Yu, Kai Yao
Summary: The growth of thin SnOx films on perovskite absorbers using atomic layer deposition (ALD) offers a promising method for improving carrier-selective contacts and preventing humidity ingress in high-performance tandem perovskite solar cells. However, the interaction between perovskite materials and ALD precursor restricts the process parameters and requires an additional fullerene layer. This study demonstrates that reducing the water dose during SnOx deposition can reduce degradation of the perovskite underlayer, while increasing the water dose improves the electrical properties. A SnOx buffer layer with a gradient composition structure is designed to enhance carrier extraction and minimize reliance on the fullerene layer. The design shows broad applicability for different perovskite compositions and textured morphologies, and achieves a certified efficiency of 28.0% for perovskite/silicon tandem cells.
Article
Chemistry, Multidisciplinary
Jaebaek Lee, Dong-Hwan Jeon, Dae-Kue Hwang, Kee-Jeong Yang, Jin-Kyu Kang, Shi-Joon Sung, Hyunwoong Park, Dae-Hwan Kim
Summary: This study utilized atomic layer deposition (ALD) processes to fabricate thin window layers for Cu(In-x,Ga1-x)Se-2 (CIGS) thin-film solar cells, showing superior photovoltaic performances and increased efficiency compared to traditional sputtering techniques.
Article
Chemistry, Physical
Zhihao Li, Zhenhan Wang, Chunmei Jia, Zhi Wan, Chongyang Zhi, Can Li, Meihe Zhang, Chao Zhang, Zhen Li
Summary: This article proposes a new method for the deposition of SnO2 electron transport layers (ETLs) at room temperature, which is suitable for the fabrication of flexible solar cells. The experiments show that SnO2 films treated with amine gases are smoother and more compact compared to those treated with thermal annealing. A base-catalyzed densification mechanism is proposed to explain the experimental results. The flexible solar cells with the annealing-free SnO2 ETLs achieve high power conversion efficiencies and excellent flexibility.
Article
Chemistry, Physical
Andres-Felipe Castro-Mendez, Jamie P. Wooding, Selma Fairach, Carlo A. R. Perini, Emily K. McGuinness, Jacob N. Vagott, Ruipeng Li, Sanggyun Kim, Vivek Brahmatewari, Nicholas Dentice, Mark D. Losego, Juan -Pablo Correa-Baena
Summary: This study demonstrates the use of vapor phase infiltration (VPI) to create hybrid organic-inorganic layers, improving the stability of organic charge transport layers in perovskite solar cells (PSCs). By infiltrating TiOx via VPI, the crystallization of the spiro-OMeTAD layer is hindered, preventing N-N stacking of the molecules. The infiltrated PSCs retained over 80% of their original efficiency after a 200-hour stability test at 75 degrees C, while devices without infiltration rapidly decreased in efficiency within the first 50 hours. This work provides a blueprint for stabilizing organic charge transport layers using VPI and preventing deleterious crystallization that shortens device lifetimes.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Chenshuaiyu Liu, Renxing Lin, Yurui Wang, Han Gao, Pu Wu, Haowen Luo, Xuntian Zheng, Beibei Tang, Zilong Huang, Hongfei Sun, Siyang Zhao, Yijia Guo, Jin Wen, Fengjia Fan, Hairen Tan
Summary: This study uses metal oxide nanocrystal layers anchored with carbazolyl hole-selective-molecules to replace traditional polymers as the hole transporting layers in all-perovskite tandem solar cells. This reduces optical losses and improves power conversion efficiency.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Ruihan Yuan, Bing Cai, Yinhua Lv, Xiang Gao, Jinwen Gu, Zhenghui Fan, Xinhang Liu, Chi Yang, Mingzhen Liu, Wen-Hua Zhang
Summary: In this study, low-temperature processed SnO2/NbOx nanocrystals were reported as efficient electron transport materials (ETMs) for planar perovskite solar cells (PSCs), achieving an impressive power conversion efficiency (PCE) of 24.01% with remarkable device stability. The NbOx layer passivates defects, promotes charge extraction, and improves perovskite film crystallinity, leading to enhanced device performance. This work provides a facile approach for low-temperature processed ETMs with boosted carrier extraction ability, offering excellent efficiency and stability for planar PSCs.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Nga Phung, Marcel Verheijen, Anna Todinova, Kunal Datta, Michael Verhage, Amran Al-Ashouri, Hans Koebler, Xin Li, Antonio Abate, Steve Albrecht, Mariadriana Creatore
Summary: Metal halide perovskites have excellent electronic properties, and recent advancements in device performance and stability of perovskite solar cells have been achieved with the application of self-assembled monolayers (SAMs). By introducing an intermediate layer of NiO between ITO and SAM, the coverage and homogeneity of SAMs on the substrate can be improved, leading to enhanced device performance. The combination of NiO and SAM results in a more than 20% efficient champion device with a narrower distribution of performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Helen Hejin Park
Summary: ALD plays a crucial role in the development of PSCs, offering new possibilities for improving efficiency, stability, and scalability through its applications in charge transport layers, passivation layers, and buffer and recombination layers. Future research directions and challenges will also be discussed.
Article
Nanoscience & Nanotechnology
Chunyan Wang, Jihuai Wu, Shibo Wang, Xuping Liu, Xiaobing Wang, Zhongliang Yan, Liqiang Chen, Xiao Liu, Guodong Li, Weihai Sun, Zhang Lan
Summary: The study introduced alkali metal fluoride as an additive in perovskite solar cells, leading to improved stability and performance, achieving a power conversion efficiency of 22.51%. This provides a typical example of low-cost and multifunctional additives in high-performance PSCs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Eunyoung Choi, Jin-Won Lee, Miguel Anaya, Alessandro Mirabelli, Hongjae Shim, Joseph Strzalka, Jongchul Lim, Siwon Yun, Milos Dubajic, Jihoo Lim, Jan Seidel, Raphael Edem Agbenyeke, Chang Gyoun Kim, Nam Joong Jeon, Arman Mahboubi Soufiani, Helen Hejin Park, Jae Sung Yun
Summary: Long-chain organic halide salts are widely used in perovskite-based optoelectronic devices for surface passivation. By introducing aluminum oxide (AlOx) onto octylammonium iodide (OAI) through atomic layer deposition, the benefits of organic halide salts can be utilized without generating undesired defects. The OAI/AlOx devices show improved performance and photo-stability compared to the treated devices, with a diffusion of aluminum from AlOx into the perovskite contributing to uniform carrier transport. In addition, light-induced two-dimensional perovskite formation is observed on OAI/AlOx, which prevents the loss of OA cations and suppresses the light-induced degradation of the devices.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yezhou Liu, Caitian Gao, Jeonghun Yun, Yeongae Kim, Moobum Kim, Jia Li, Xiaoya Li, Seok Woo Lee
Summary: Batteries are the most promising small-scale energy storage (EES) system due to their portability, quick response time, and high compatibility with electrical devices. A thermally assisted K/Zn ion hybrid battery is proposed, which shows improved roundtrip efficiency at different temperatures. Applying this research to conventional battery cycles can reduce energy loss.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Angyin Wu, Xiaoya Li, Donghoon Lee, Jia Li, Jeonghun Yun, Cheng Jiang, Zongkang Li, Seok Woo Lee
Summary: In this study, a thermoresponsive ionic liquid (TRIL) was added to the electrolyte in a TREC system for ultralow-grade heat harvesting, resulting in high energy density and conversion efficiency. The solvation states of ions changed during charging and discharging across the phase change critical point, achieving significant improvement in energy efficiency compared to conventional systems. The tunable phase change temperature of the TRIL enhances the feasibility and resilience of the TREC system, providing a novel perspective for electrolyte design in electro-chemical cells.
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
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
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
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)
Meeting Abstract
Gastroenterology & Hepatology
Chan Xie, Dongying Xie, Lei Fu, Wen-hua Zhang, Jia Wei, Guojun Li, Jiahong Yang, Xinyue Chen, Jia-bin Li, Jia Shang, Yu-juan Guan, Yongfang Jiang, Ying Guo, Yi-lan Zeng, Jiabao Chang, Yanzhong Peng, Minghua Lin, Guangyu Huang, Jia Li, Shengwang Gu, Jia-wei Geng, Zhiliang Gao
JOURNAL OF HEPATOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Foo Shini, M. Thambidurai, Herlina Arianita Dewi, Nur Fadilah Jamaludin, Annalisa Bruno, Anil Kanwat, Nripan Mathews, Cuong Dang, Hung D. Nguyen
Summary: The interfacial passivation technique is an effective method for enhancing stability and photovoltaic performance of perovskite solar cells. This study highlights the importance of passivating undercoordinated halide ions in minimizing carrier losses at the perovskite/spiro-OMeTAD interface, leading to improved power conversion efficiency. CBSC serves as a Lewis acid passivation material, effectively binding to undercoordinated halide ions and Pb-I antisite defects, resulting in a champion CBSC-passivated perovskite device with high efficiency and long-term stability.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Physical
Herlina Arianita Dewi, Jia Li, Enkhtur Erdenebileg, Hao Wang, Michele De Bastiani, Stefaan De Wolf, Nripan Mathews, Subodh Mhaisalkar, Annalisa Bruno
Summary: A facile method is proposed to increase the bandgap of co-evaporated MAPbI(3) through a MABr-based treatment, resulting in improved spectral stability and blue-shifted external quantum efficiency in the n-i-p PSCs built from the treated films.
SUSTAINABLE ENERGY & FUELS
(2022)