Article
Chemistry, Multidisciplinary
Danni Yu, Qi Wei, Hansheng Li, Junhan Xie, Xianyuan Jiang, Ting Pan, Hao Wang, Mengling Pan, Wenjia Zhou, Weimin Liu, Philip C. Y. Chow, Zhijun Ning
Summary: The combination of comprehensive surface passivation and effective interface carrier transfer plays a critical role in high-performance perovskite solar cells. A new molecule, 2-thiopheneethylamine thiocyanate (TEASCN), is synthesized to construct a bilayer quasi-2D structure on a tin-lead mixed perovskite surface. This bilayer structure passivates the perovskite surface and ensures effective carrier transfer, resulting in improved open-circuit voltage and certified efficiency.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Wenxuan Lv, Zhaoying Hu, Wei Qiu, Dongdong Yan, Meicheng Li, Anyi Mei, Ligang Xu, Runfeng Chen
Summary: A dynamic strategy to modulate perovskite film formation by using a soft perovskite-substrate interface is proposed. The soft interface, constructed by employing amphiphilic soft molecules, improves the wettability of the substrate and passivates defects in the perovskite lattice. This strategy leads to high-quality perovskite films and achieves high efficiency and stability in perovskite solar cells.
Article
Chemistry, Physical
Wentao Chen, Yuqiong Huang, Hong Cui, Sihan Li, Yaqing Feng, Bao Zhang
Summary: By incorporating 2,6-diaminopyridine (TNPD) as a nucleating agent, the growth of Pb-Sn perovskites in tin-lead perovskite solar cells (PSCs) can be modulated, resulting in an improved power conversion efficiency (PCE). TNPD induces crystal growth during nucleation, forms a protective film on the crystal surface, and releases micro-strain generated during film growth. Additionally, TNPD reduces defect density by screening the perovskite against oxygen and synergistically bonding with undercoordinated Sn/Pb on the surface. As a result, a high open circuit voltage and PCE of 0.85 V and 20.35% are achieved in Pb-Sn PSCs, respectively, along with improved stability.
Article
Chemistry, Multidisciplinary
Md Arafat Mahmud, Huyen T. Pham, The Duong, Yanting Yin, Jun Peng, Yiliang Wu, Wensheng Liang, Li Li, Anand Kumar, Heping Shen, Daniel Walter, Hieu T. Nguyen, Naeimeh Mozaffari, Grace Dansoa Tabi, Gunther Andersson, Kylie R. Catchpole, Klaus J. Weber, Thomas P. White
Summary: The introduction of 2D perovskite for modifying 3D perovskite films has been shown to enhance both surface and bulk defect passivation, leading to improved efficiency of perovskite solar cells. The study demonstrates that Cl- anion diffuses into the perovskite lattice to passivate defects, while octylammonium ligands provide effective surface passivation. The diffusion of Cl- into the perovskite lattice occurs independently of 2D perovskite crystallization and contributes to effective bulk passivation.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xue Ma, Yu Zhang, Jianheng Zhou, Lang Liu, Minggang Ju, Ning Wang
Summary: Surface defects in tin-based perovskite films can disrupt the arrangement of atoms, leading to interactions with water and oxygen molecules. The introduction of alpha-Tocopherol helps suppress oxidation and improve the performance of tin-based perovskite solar cells.
Article
Chemistry, Multidisciplinary
Hengkai Zhang, Zhiliang Chen, Minchao Qin, Zhiwei Ren, Kuan Liu, Jiaming Huang, Dong Shen, Zehan Wu, Yaokang Zhang, Jianhua Hao, Chun-sing Lee, Xinhui Lu, Zijian Zheng, Wei Yu, Gang Li
Summary: By introducing the in situ crosslinking-enabled strain-regulating crystallization (CSRC) method with trimethylolpropane triacrylate (TMTA), the tensile strain and grain size of perovskite solar cells (PSCs) based on alpha-Formamidinium lead triiodide (alpha-FAPbI(3)) were successfully regulated, leading to significantly enhanced performance. The CSRC approach not only improved power conversion efficiency (PCE), but also ensured outstanding device stability under both long-term storage and light soaking conditions.
ADVANCED MATERIALS
(2021)
Article
Engineering, Environmental
Bin Chen, Shurong Wang, Xin Zhang, Weike Zhu, Zhiyuan Cao, Feng Hao
Summary: By using a hydrophobic bulky molecule to passivate the lead-free perovskite surface, the open-circuit voltage loss is significantly reduced and the efficiency of the solar cell is improved. This treatment also suppresses interface non-radiative recombination, extends the carrier lifetime, enhances vertical carrier transportation, and reduces the density of defect states and residual stress accumulation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jiuyao Du, Jifeng Yuan, Jiahao Xi, Fei Huang, Jianjun Tian
Summary: In this study, 1-ethyl-3-methylimidazolium acetate ([EMIM]Ac) ionic liquid was introduced to passivate the surface defects of perovskite films, improving the performance and stability of metal halide perovskite solar cells. The carbonyl groups of [EMIM]Ac coordinate with the uncoordinated lead ions on the perovskite surface, reducing nonradiative recombination and improving working stability. The power conversion efficiency of the solar cell increased from 16.95% to 19.29% with [EMIM]Ac treatment. This surface passivation method using an ionic liquid may have significant implications for the development and practical application of perovskite solar cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Editorial Material
Chemistry, Physical
Fei Zhang, Kai Zhu
Summary: Researchers first achieved phase-pure 2D perovskite films by replacing BAI with BAAc, showing stronger ionic co-ordination with the perovskite framework, resulting in a PCE of 16.25% with enhanced stability.
Article
Chemistry, Physical
Ruihao Chen, Yang Yang, Zhiyuan Dai, Li Yuan, Jieru Du, Penghui Yang, Yuyao Yang, Hui Shen, Zhe Liu, Hongqiang Wang
Summary: The industrialization of organic-inorganic hybrid perovskite photovoltaic devices needs to be further promoted, while considering the efficiency and stability modules. The development of an on-surface conversion patch healing strategy for polycrystalline perovskite films, based on a one-dimensional lead-iodide structure, has been introduced.
Article
Multidisciplinary Sciences
Hao Chen, Aidan Maxwell, Chongwen Li, Sam Teale, Bin Chen, Tong Zhu, Esma Ugur, George Harrison, Luke Grater, Junke Wang, Zaiwei Wang, Lewei Zeng, So Min Park, Lei Chen, Peter Serles, Rasha Abbas Awni, Biwas Subedi, Xiaopeng Zheng, Chuanxiao Xiao, Nikolas J. Podraza, Tobin Filleter, Cheng Liu, Yi Yang, Joseph M. Luther, Stefaan De Wolf, Mercouri G. Kanatzidis, Yanfa Yan, Edward H. Sargent
Summary: The open-circuit voltage (V-OC) deficit in perovskite solar cells is attributed to the poor alignment of surface potential and energetic levels. Introducing diammonium molecules for surface treatment can enhance the quasi-Fermi-level splitting and achieve high efficiency in perovskite solar cells.
Article
Multidisciplinary Sciences
Hao Chen, Aidan Maxwell, Chongwen Li, Sam Teale, Bin Chen, Tong Zhu, Esma Ugur, George Harrison, Luke Grater, Junke Wang, Zaiwei Wang, Lewei Zeng, So Min Park, Lei Chen, Peter Serles, Rasha Abbas Awni, Biwas Subedi, Xiaopeng Zheng, Chuanxiao Xiao, Nikolas J. Podraza, Tobin Filleter, Cheng Liu, Yi Yang, Joseph M. Luther, Stefaan De Wolf, Mercouri G. Kanatzidis, Yanfa Yan, Edward H. Sargent
Summary: The open-circuit voltage deficit in wide-bandgap perovskite solar cells is larger than in perovskites with a bandgap of approximately 1.5 eV. The limiting factor for the open-circuit voltage is found to be recombination at the electron-transport-layer contact, resulting from inhomogeneous surface potential and poor energetic alignment. To address this issue, a new surface treatment using diammonium molecules is introduced to achieve a more uniform distribution of surface potential.
Article
Chemistry, Applied
Zheng Zhang, Liang Wang, Ajay Kumar Baranwal, Shahrir Razey Sahamir, Gaurav Kapil, Yoshitaka Sanehira, Muhammad Akmal Kamarudin, Kohei Nishimura, Chao Ding, Dong Liu, Yusheng Li, Hua Li, Mengmeng Chen, Qing Shen, Teresa S. Ripolles, Juan Bisquert, Shuzi Hayase
Summary: This study proposes an effective strategy based on trimethylsilyl halide surface passivation to enhance the film quality and stability of lead-free tin perovskite solar cells (PKSCs). The efficiency and stability of the solar cells were significantly improved after applying this strategy.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Engineering, Environmental
Bin Lyu, Xu Guo, Dangge Gao, Mengnan Kou, Yajin Yu, Jianzhong Ma, Shaowei Chen, Hao Wang, Ying Zhang, Xin Bao
Summary: This study successfully developed an effective approach using gelatin for interfacial passivation and coating to prepare highly-stable all-inorganic tin-based perovskite nanocrystals, retaining 77.46% of photoluminescence intensity even after dispersion in water for 3 days. Gelatin forms a rich ligand state on the nanocrystal surface, providing excellent anti-mildew properties and promoting the stability and sustainable development of perovskite devices.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Helin Wang, Jiatao Wu, Jun Song, Junle Qu, Jiarong Lian, Peng-Cheng Qian, Wai-Yeung Wong
Summary: A linear conjugated polyelectrolyte was developed and employed as a dopant to improve the performance and stability of perovskite film in solar cells. The PPNNA doping reduces electronic trap states and surface defects, enhancing electron extraction and transport, leading to higher efficiency solar cells. The PPNNA-doped perovskite film shows better stability, with the optimal 0.4% PPNNA-doped device exhibiting improved photovoltaic efficiency and device stability compared to the control device.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Hyeonwoo Kim, Kyoung Su Lee, Min Jae Paik, Do Yoon Lee, Seung-Un Lee, Eunyoung Choi, Jae Sung Yun, Sang Il Seok
Summary: The study focused on the use of inexpensive, efficient, and stable hole-transporting layers (HTLs) for commercialization of perovskite solar cells. By combining CuPc with PMMA interlayer, the PSC showed enhanced efficiency and stability, with PMMA reducing surface defects and electronic barriers. The PSC achieved a PCE of 21.3% and over 80% stability after 760 hours under harsh conditions.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Qi Zhang, Yu Jie Zheng, Wenbo Sun, Zeping Ou, Omololu Odunmbaku, Meng Li, Shanshan Chen, Yongli Zhou, Jing Li, Bo Qin, Kuan Sun
Summary: By utilizing machine learning and quantum chemistry, researchers have developed high-performance Y6 derivative acceptor materials in the field of organic photovoltaics. They have also provided a rational design guide for developing novel OPV materials. This approach not only accelerates materials discovery, but also offers a framework for designing new OPV materials.
Article
Chemistry, Multidisciplinary
Jianqiang Qin, Qianguang Yang, Jiyeon Oh, Shanshan Chen, George Omololu Odunmbaku, Nabonswende Aida Nadege Ouedraogo, Changduk Yang, Kuan Sun, Shirong Lu
Summary: The study introduces a volatile solid additive-assisted sequential deposition strategy to optimize the morphology of the active layer in organic solar cells, resulting in enhanced performance. The combination of a volatile solid additive and sequential deposition method proves to be effective in developing high-performance OSCs.
Article
Nanoscience & Nanotechnology
Linkai Lan, Feng Li, Wen Li, Rui Chen, Zhuang Xiong, Yongjie He, Nabonswende Aida Nadege Ouedraogo, Bin Ai, Luqi Tao, Kuan Sun, Shanshan Chen
Summary: This study demonstrates a strategy to regulate the blend of polymeric electrodes by embedding a double network, achieving both biocompatibility and high conductivity. The optimal polymeric electrode shows high-quality electromyogram and electrocardiogram signals.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Ben Zhang, Fu Yang, Shanshan Chen, Haiyang Chen, Guang Zeng, Yunxiu Shen, Yaowen Li, Yongfang Li
Summary: The study found that the non-Newtonian fluid feature of conjugated polymer affects the efficiency of large-scale solar cell modules, but a new deposition method successfully addressed this issue, achieving high efficiency in large-scale solar cell modules.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Yongjie He, Qi Zhang, Hanlin Cheng, Yang Liu, Yue Shu, Yang Geng, Yujie Zheng, Bo Qin, Yongli Zhou, Shanshan Chen, Jing Li, Meng Li, Omololu George Odunmbaku, Chen Li, Tatyana Shumilova, Jianyong Ouyang, Kuan Sun
Summary: This study focuses on the use of mobile ions as charge carriers in i-TE hydrogels and reveals that the influence of ions on hydrogen bonding is a crucial factor in determining thermoelectric performance. Among various i-TE hydrogels, the PVA/CsI hydrogel demonstrates the highest ionic Seebeck coefficient of 52.9 mV K-1, which is the largest among all reported i-TE materials to date.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Hua Tang, Jie Lv, Kuan Liu, Zhiwei Ren, Hrisheekesh Thachoth Chandran, Jiaming Huang, Ying Zhang, Hao Xia, Jafar Khan, Dingqin Hu, Cenqi Yan, Jiyeon Oh, Shanshan Chen, Shenglong Chu, Patrick W. K. Fong, Haiyan Chen, Zhengguo Xiao, Changduk Yang, Zhipeng Kan, Frederic Laquai, Shirong Lu, Gang Li
Summary: This study demonstrates a green-solvent-processable and open-air-printable self-assembly strategy to improve the performance of organic solar cells. The strategy simplifies the device architecture, enhances the power conversion efficiency, and improves the stability and scalability of the cells. The findings of this study contribute to the commercialization of organic solar cells.
Article
Chemistry, Physical
Feng Li, Gao-Feng Han, Yunfei Bu, Shanshan Chen, Ishfaq Ahmad, Hu Young Jeong, Zhengping Fu, Yalin Lu, Jong-Beom Baek
Summary: The research demonstrates the critical role of active site interaction in the intrinsic activity of single atom catalysts during acidic hydrogen evolution catalysis. The improved active site interaction in PtSACs shows significantly enhanced intrinsic activity, surpassing commercial Pt/C and other reported outstanding catalysts. Theoretical calculations reveal that increasing interaction between single atom active sites can modify their electronic configurations and enhance hydrogen adsorption/desorption behaviors, responsible for the improved intrinsic activity towards hydrogen evolution catalysis.
Review
Chemistry, Multidisciplinary
George Omololu Odunmbaku, Shanshan Chen, Bing Guo, Yongli Zhou, Nabonswende Aida Nadege Ouedraogo, Yujie Zheng, Jing Li, Meng Li, Kuan Sun
Summary: This paper discusses the optoelectronic properties of metal halide perovskites as an attractive photovoltaic material and focuses on the losses induced by nonradiative recombination processes in the device stack. The study reveals that nonradiative recombination processes at interfaces are more dominant than those within the bulk of the perovskite absorber, but there is still room for improvement in suppressing bulk nonradiative recombination. General routes for suppressing recombination processes within the bulk and at interfaces are also discussed.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Manman Hu, Andi Muhammad Risqi, Jianchang Wu, Liang Chen, Jaewang Park, Seung-Un Lee, Hyun-Sung Yun, Byung-Wook Park, Christoph J. Brabec, Sang Il Seok
Summary: By replacing Li-TFSI with DPI-TPFB as the dopant, FASnI(3)-based PSCs achieved an efficiency of 10.9% and approximately 80% of the initial efficiency was maintained after 1,597 hours under maximum power point tracking conditions. Particularly, the encapsulated device showed no decrease in efficiency even after holding for 50 hours in the 85 degrees C/85% RH condition. The high efficiency and excellent stability of PSCs prepared by doping with DPI-TPFB are attributed to its ability to increase electrical conductivity as a Lewis acid and stabilize Sn2+ through coordination with Sn2+ on the surface of FASnI(3).
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Multidisciplinary Sciences
Jaewang Park, Jongbeom Kim, Hyun-Sung Yun, Min Jae Paik, Eunseo Noh, Hyun Jung Mun, Min Gyu Kim, Tae Joo Shin, Sang Il Seok
Summary: Controlling the crystallinity and surface morphology of perovskite layers is crucial for achieving high-efficiency perovskite solar cells. By adding alkylammonium chlorides (RACl) to a-formamidinium lead iodide (FAPbI(3)), the crystallization process and surface morphology of the perovskite thin films can be controlled. The resulting perovskite thin layers facilitate the fabrication of perovskite solar cells with a high power-conversion efficiency of 26.08%.
Article
Chemistry, Physical
Bo Zhang, Jiyeon Oh, Zhe Sun, Yongjoon Cho, Seonghun Jeong, Xiao Chen, Kuan Sun, Feng Li, Changduk Yang, Shanshan Chen
Summary: Rational design and modification of the buried interface towards high performance perovskite solar cells (PSCs) were achieved by using guanidinium passivators with multiamine substitutions. The binding geometry of the highly polarized imine moiety in the passivators was found to dominate the passivation effect on the SnO2 surface, resulting in reduced trap density and nonradiative recombination. The PSCs with buried passivators exhibited a champion power conversion efficiency of 24.4%, an advanced open-circuit voltage of 1.197 V, and a prolonged lifetime over 90% of the initial efficiency after 900 hours in ambient conditions.
ACS ENERGY LETTERS
(2023)
Review
Chemistry, Physical
Weiguang Chi, Sanjay K. Banerjee, K. G. D. I. Jayawardena, Sang Il Seok, S. Ravi P. Silva
Summary: In recent years, there has been intensive research on perovskite/silicon tandem solar cells, leading to a rapid increase in their efficiencies. The most suitable subcell for tandem devices is a debatable topic, and this study summarizes three attractive silicon solar cells: passivated-emitter rear-cell (PERC), tunnel oxide passivated contact (TOPCon), and heterojunction (HJT) cells. Their structures and features are elucidated to understand their mechanism and potential for optimum performance. Furthermore, the characteristics and performance of perovskite/silicon tandem cells with these subcells are compared and discussed, with emphasis on the contribution of passivation layer and structure design on both sides. The recombination layer between the two subcells is also analyzed in depth, considering material chemistry, light absorption, and charge transport for achieving an optimized structure.
ACS ENERGY LETTERS
(2023)
Review
Chemistry, Multidisciplinary
Xueping Liu, Deying Luo, Zheng-Hong Lu, Jae Sung Yun, Michael Saliba, Sang Il Seok, Wei Zhang
Summary: Interest in photovoltaics based on Earth-abundant halide perovskites has grown in recent years due to their remarkable properties and energy-efficient processing. However, the stability of the FAPbI(3) phase, a leading candidate, needs to meet industrial standards for commercial success. This article critically assesses the current understanding of phase instabilities, explores stabilization approaches, and highlights the challenges and opportunities for advancing perovskite PVs.
NATURE REVIEWS CHEMISTRY
(2023)
Article
Chemistry, Physical
Hyeonwoo Kim, Do Yoon Lee, Jihoo Lim, Jongbeom Kim, Jaewang Park, Jan Seidel, Jae Sung Yun, Sang Il Seok
Summary: Researchers explore the feasibility of using nickel phthalocyanine (NiPc) as a hole transport material (HTM) for perovskite solar cells (PSCs). By employing a bilayer of NiPc and poly(3-hexylthiophene) (P3HT) as the HTM, the highest reported power conversion efficiency of 23.11% for NiPc-based PSCs is achieved. Additionally, the PSC demonstrates excellent long-term stability, retaining 90% of its initial efficiency after exposure to harsh conditions.
ADVANCED ENERGY MATERIALS
(2023)
