Nature Communications
·
2026
·
IF 18.1
Li Gaofeng,Tan Jieke,Lin Changqing,Zhu Cheng,Du Yujiang,Li Zhou,Chen Shulin,Wei Xiaozhen,Xing Zhe,Wang Yuzhe,Lv Chunyu,Zhang Qixian,Liu Huicong,Li Weiping,Bai Yang,Yang Shihe,Lin Zedong,Liu Zhike,Chen Haining
Inorganic CsPbI 3 perovskite, known for its high chemical stability and near-ideal bandgap, offers a promising solution to the instability of organic-inorganic hybrid perovskites that limit perovskite solar cells (PSCs) longevity. However, the conventional intermediate phase (dimethylammonium lead iodide, DMAPbI 3 ) templating method suffers from inefficient phase conversion, hindering high-performance PSC development. To overcome this limitation, we engineered the crystallographic orientation of DMAPbI 3 to promote rapid volatilization of DMAI and accelerating the transformation. Through in situ anchoring of Pb 2+ -complexing groups (-F < -Cl < -SO 4 ) on TiO 2 substrates during chemical bath deposition, we direct the preferential in-plane growth of Pb-rich (100) planes of DMAPbI 3 , enhancing its [100] orientation. Crucially, stronger complexing groups yield higher orientation degrees, accelerating thermal conversion into highly oriented CsPbI 3 perovskite with higher purity and better optoelectronic properties. This strategy enables carbon-based, hole-transport-layer-free CsPbI 3 PSCs to achieve a record 20.72% efficiency (certified as 20.35%). Unencapsulated device retains > 85% of their initial efficiency after 1156 h of continuous maximum power point tracking under 1-sun illumination.
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 34
·46680-46690
·
IF 7.8
Xu Jiao,Liu Qiming,Wu Dongxu,Wang Haotian,Tang Huayi,Liu Weili,Liang Hongwei,Yang Yiming
The development of polarization-sensitive photodetectors based on low-dimensional materials with intrinsic lattice anisotropy has paved the way for next-generation polarizer-free and integration-friendly polarization-sensitive optoelectronic devices. Despite their superiority in miniaturization, the relatively low dichroic ratios (DRs) hinder further industrialization. In this work, low-dimensional derivatives of perovskite, quasi-1D yellow-phase (δ-phase) CsPbI 3 single nanowires (NWs) are investigated for polarization-sensitive photodetection. Aberration-corrected transmission electron microscopy (TEM) and angle-resolved polarized Raman spectroscopy (ARPRS) reveal the pronounced crystallographic anisotropy of δ-CsPbI 3 . The pristine δ-CsPbI 3 single NW photodetector exhibits a large DR of up to 8.3 under 405 nm illumination. To overcome the limited optoelectronic performance arising from the indirect bandgap nature of δ-CsPbI 3 , localized surface plasmon resonance (LSPR) is introduced by decorating the δ-CsPbI 3 single NW with Au nanoparticles (NPs) via thermal evaporation. The Au-decorated device exhibits up to approximately 9-fold photocurrent enhancement compared with the pristine one, achieving a photoresponsivity ( R ) of 5.3 mA W –1 and a specific detectivity ( D *) of 1.1 × 10 10 Jones while retaining the high polarization sensitivity. In addition, the Au-decorated device demonstrates appreciable operational stability under ambient conditions, preserving 92% of its initial photocurrent after 400 switching cycles. This work unveils the great potential of the δ-CsPbI 3 single NW for polarized light detection and demonstrates the feasibility of Au NP decoration regarding optoelectronic performance optimization, which can potentially be extended to other low-dimensional perovskite derivatives with analogous quasi-1D chain lattices.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Yueli Liu,Tonghuan Gao,Zifan Yang,Huixin Zhu,Keqiang Chen,Yunan Bao,Wen Chen
Inorganic CsPbI3 perovskite quantum dots (PQDs) possess excellent optical properties, holding broad application prospects in the field of photovoltaics. However, the issues of a complex surface chemical environment and high compositional defect density for CsPbI3 PQDs have severely influenced the performance of CsPbI3 PQD solar cells (PQDSCs). Herein, the sequential treatment strategy based on the ligand exchange of trimethyliodosilane (TMIS) and the compositional defect regulation of formamidinium iodide (FAI) is introduced. Short-chain ligands of TMIS are used to replace the original ligands of CsPbI3 PQDs and robustly anchor to the PQD surface, which guarantees the high stability and efficient charge carrier transport of CsPbI3 PQDs. Furthermore, FAI is introduced by the vacancies and dangling bonds as the driving force on the PQD surface to passivate the defects of Cs and I vacancies while reducing the exciton binding energy and band gap of the CsPbI3 PQDs. Consequently, the power conversion efficiency of PQDSCs is achieved to be 15.07%, which is greatly enhanced compared with that of the control device (12.09%), and only 26% of the initial efficiency is lost after aging under ambient conditions (20–30% RH) for 14 days.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2024
·
IF 24.4
Zihao Fan,Yuwei Duan,Meizi Wu,Hong Zou,Yao Yao,Yong Li,Dongfang Xu,Jieke Tan,Yongzhe Li,Hanye Wang,Yifan Wang,Zhuang Xie,Hongjie Lei,Zezhang Wang,Tingxing Zhao,Qiang Peng,Shengzhong Liu,Zhike Liu
The lithium bis(trifluoromethane) sulfonimide salt (Li-TFSI) and 4-tert-butylpyridine ( t -BP) codoped 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (Spiro-OMeTAD) is a very classic and dominant hole transport layer (HTL) for the fabrication of high-efficiency perovskite solar cells (PSCs). However, the PSCs based Spiro-OMeTAD often shows poor stability due to the hygroscopic Li-TFSI that is prone to ion migration, the volatile t -BP, and the time-consuming oxidation in air. Herein, hydrophobic 1,2-Bis(perfluoropyridin-4-yl)disulfane (BPFPDS) is designed to optimize Spiro-OMeTAD. The S-Li, F-Li, and N-Li synergistic interaction between BPFPDS and Li-TFSI inhibited Li + ion migration, and the hydrophobic property of BPFPDS balanced the humidity sensitivity of Li-TFSI, which prevented both Li + ions and water molecules from corroding the perovskite layer. In addition, the F-N superamolecular interaction between BPFPDS and t -BP restricted the volatility of t -BP, which indirectly prevented the migration of Li + ions. As a result, the BPFPDS-treated CsPbI 3 PSC engendered a respectable efficiency of 21.95% and an impressive open-circuit voltage ( V OC ) of 1.29 V. The BPFPDS-treated devices sustained 96% and 98% of their efficiencies after aging in the air for 3000 h and tracking at maximum power point for 1200 h, respectively.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Joule
·
2022
·
IF 46.048
Donglin Jia,Jingxuan Chen,Junming Qiu,Huili Ma,Mei Yu,Jianhua Liu,Xiaoliang Zhang
Inorganic CsPbI 3 perovskite quantum dot (PQD) shows high potential for new-generation photovoltaics due to its outstanding optoelectronic properties. However, the binding-energy-driven ligand exchange of PQDs limits the construction of conductive and stable PQD solids for efficient PQD solar cells (PQDSCs). Herein, protic 2-pentanol with superior ligand solubility is delicately screened from massive solvents to mediate the ligand exchange of PQDs due to its appropriate dielectric constant and acidity, which could maximize the removal of pristine insulating oleylamine ligands from the PQD surface without introducing halogen vacancy defects. Employing tailored short choline ligands and 2-pentanol solvent for the post-treatment of PQD solids, PQDSC yields an efficiency of 16.53%, which is the highest among inorganic PQDSCs. This outstanding performance is attributed to the improved charge carrier transport and surface defect passivation of PQDs. This work provides a feasible platform for tuning the surface properties of PQDs and paves the way for realizing high-performing optoelectronics.
研究领域:
材料科学
·
光伏技术
·
纳米科技
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2026
·
IF 7.2
Guohao Bu,Shujian Wang,Chen Yang,Wenyuan Zhou,Chao Tian,Naiwei Liu,Jun Pan,Chaoyu Xiang
The synthesis of perovskite nanocrystals for light-emitting diodes typically employs poorly controlled ion-mediated precipitation processes, suffering from low photoluminescence quantum yield (PLQY), inhomogeneous morphology, and poor stability. Herein, by adjusting the nucleation method with a new type of precursor, namely “DMAPbI 3 ”, high-quality and low-defect-density perovskite CsPbI 3 nanocrystals were successfully synthesized, with PLQY of 93% emitting at 659 nm. Particularly, the CsPbI 3 nanocrystals exhibit enhanced environmental stability, maintaining ∼70% of their initial photoluminescence intensity after 6 h of UV irradiation exposure or 100°C aging. Utilized as the luminescent layer, the fabricated perovskite LED (PeLED) device shows a peak EQE of 27.5%, representing an almost two-fold enhancement compared to 14.7% for the control PeLED device. This simple and efficient approach is well-suited for large-scale production and practical applications.
✓ 已验证
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·10078
·
IF 15.7
Zheng Weilin,Chen Jiangkun,Guo Yang,Zhang Xin,Chun Fengjun,Cao Yaxin,Gao Xiaoping,Suo Hao,Wei Xiaohe,Xing Zhifeng,Wang Yanze,Wang Feng
CsPbX 3 (X = Cl, Br, I) nanosheets have emerged as a promising platform for tuning quantum confinement effects and achieving efficient optoelectronic devices. However, synthesizing uniform CsPbX 3 nanosheets with monolayer-level thicknesses remains a challenge due to the fast reaction kinetics. Herein, we develop a synthetic strategy that leverages Pb-deficient precursors to control reaction kinetics. Our experimental investigations indicate that Pb deficiency in the precursors decelerates the crystal growth, offering enhanced dimensional control in CsPbX 3 systems. This approach enables the synthesis of uniform CsPbI 3 nanosheets with tunable thickness down to two octahedral layers, which exhibit a narrowband emission at 563 nm and high stability against spectral drift. This method is readily extended to CsPbBr 3 and CsPbCl 3 systems for precise size and shape modulation, thus affording full-color emission tuning within mono-halide perovskites. These findings establish a versatile synthetic strategy poised to advance the design and application of CsPbX 3 nanomaterials and other colloidal nanocrystals.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
钙钛矿材料
·
胶体纳米晶体
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2022
·Vol. 10
·期 11
·2200189
·
IF 10.05
Shixu Yang,Chenghao Bi,Wei Dong,Xiaoyu Zhang,Weitao Zheng,Wallace C. H. Choy,Jianjun Tian
Perovskite quantum dot (QD) charging is prone to occur during light-emitting diode (LED) operation due to the electron accumulation inside the QD emitters, which is caused by the unbalanced charge injection and carrier transportation. Here in order to address this issue, an electron attractor of phenethylammonium (PEA + ) is introduced to the surface of perovskite QDs. The PEA + conjugated ligands can reversibly store and release electrons driven by the electron local density of states redistribution, which enhances the delocalization of electrons in QDs, and thus suppresses QD charging at high carrier concentrations, as evidenced by the excitation energy dependent photoluminescence. Besides, PEA + down-shifts the Fermi level of perovskite QDs, consequently increases the hole concentration, leading to greatly improved hole conduction. Halogen-rich synthesis environment also reduces the number of halogen vacancies, consequently narrows the distribution of electronic states at the band edges, leading to slightly improved electron conduction. Taking advantage of the enhanced electron delocalization and improved charge transportation, the CsPbI 3 QDs LEDs show the maximum external quantum efficiency (EQE) of 15.6% with a low efficiency roll-off, and the maximum luminance of 1634 cd m −2 .
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2023
·
IF 3.6
Rongliang Deng,Xiaotong Fan,Guolong Chen,Changzhi Yu,Xiao Yang,Yue Lin,Hao-Chung Kuo,Tingzhu Wu,Zhong Chen
Rigid protection layers for the lead-halide perovskite effectively enhance its stability. In this work, for the most vulnerable CsPbI 3 perovskite nanocrystals (PNCs), we introduced zero-dimensional perovskites Cs 4 PbI 6 for protection in addition to already robust SiO 2 all-inorganic encapsulation, via high-temperature solid-state synthesis. It is proven that the CsPbI 3 –Cs 4 PbI 6 nano-composite not only maintains the emission peak location of CsPbI 3 PeNCs at 700 nm with remarkable oxygen and water resistances, but also exhibits enhanced instant and long-term thermal stability compared with samples containing less amount of Cs 4 PbI 6 . The passivation of defects on the interface of CsPbI 3 –Cs 4 PbI 6 contributes to the enhancement of photoluminescence quantum yield by 8%. These ultra stable CsPbI 3 –Cs 4 PbI 6 nano-composites show potentials in the application of luminous and display industries.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 49
·2303873
·
IF 19
Na Zhang,Jungang Wang,Yuwei Duan,Shaomin Yang,Dongfang Xu,Xuruo Lei,Meizi Wu,Ningyi Yuan,Jianning Ding,Jian Cui,Zhike Liu
All-inorganic perovskite solar cells (PSCs) have been the research focus due to their high thermal stability and proper band gap for tandem solar cells. However, their power conversion efficiency (PCE) is still lower than that of organic-inorganic hybrid PSCs. Herein, a sacrificing dye (Rhodamine B isothiocyanate, RBITC) is developed to regulate the growth of perovskite film by in situ release of ethylammonium cations, isothiocyanate anions and benzoic acid molecules upon annealing and illumination. The ethylammonium cations can efficiently passivate surface defects. The isothiocyanate anions incorporate with uncoordinated Pb to regulate the crystallization process. The benzoic acid molecules facilitate the nucleation of the perovskite crystals. Especially, the illumination can accelerate the release of these beneficial ions/molecules to improve the quality of perovskite films further. After optimization with RBITC, a high open circuit voltage ( V OC ) of 1.24 V and a champion PCE of 20.95% are obtained, which are among the highest V oc and PCE values of CsPbI 3 PSCs. Accordingly, the operational stability of the PSC devices is significantly improved. The results provide an efficient chemical strategy to regulate the formation of perovskite films in whole crystallization process for high performance all-inorganic PSCs.
研究领域:
材料科学
·
能源技术
·
光电化学
✓ 已验证
产品关联
DOI
高影响因子
Joule
·
2023
·
IF 39.8
Ming-Hua Li,Shuo Wang,Xinbo Ma,Run Long,Jinpeng Wu,Mingyue Xiao,Jiaju Fu,Zhe Jiang,Gang Chen,Yan Jiang,Jin-Song Hu
Inorganic cesium lead triiodide perovskite has shown great potential in photovoltaic applications. Currently, the preparation of high-quality β- or γ-phase CsPbI 3 films largely relies on the DMAPbI 3 (dimethylammonium [DMA]) or “HPbI 3 ”-assisted crystallization method, which unfortunately causes DMAPbI 3 residue and deteriorates photovoltaic performance and stability. Herein, a universal hydrogen-bonding-facilitated DMA extraction method is developed to fabricate high-quality γ-CsPbI 3 films. Theoretical and experimental evidence manifests that the hydrogen bonds formed between polyacrylic acid (PAA) and DMAPbI 3 decrease the DMA escape energy barrier, and this not only brings ahead the decomposition process of DMAPbI 3 but also accelerates the crystallization kinetics of CsPbI 3 , resulting in pinhole-free CsPbI 3 films without any trace of DMAPbI 3 residue and an extended fabrication humidity (up to 80% relative humidity [RH]) and temperature window. Thanks to the environmentally benign crystallization, the CsPbI 3 solar cells with dopant-free poly(3-hexylthiophene) (P3HT) yield a high efficiency of 20.25% and superior moisture and operational stability.
研究领域:
材料科学
·
能源技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SusMat
·
2025
·
IF 21.3
Kun Wang,Sihong Yue,Tianxiang Li,Yu Tong,Jingyuan Tian,Yali Chen,Ziyong Kang,Feng Yang,Hongqiang Wang
Inorganic lead halide perovskites, especially CsPbI 3 , have witnessed significant progress in photovoltaic field due to their outstanding optoelectronic properties and high thermal stability. However, high-performance inorganic perovskite solar cells (IPSCs) are generally realized by strictly controlling the environmental humidity (mostly lower than 40%) during fabrication, which is undesirable for reducing fabrication cost and promoting further industrial production. Herein, a synergistic in situ hydrolysis polymerization strategy through 3,3,3-(trifluoropropyl)trichlorosilane (TFCS) and (3-2-aminoethylamino)propyltrimethoxysilane (AEMS) treatment is reported to prevent water invasion and realize efficient CsPbI 3 IPSCs in highly humid air. TFCS not only regulates the crystallization process via hydrolysis reaction, but also stabilizes the phase structure by passivating the defects and producing a hydrophobic protection layer. Additionally, TFCS facilitates in situ polymerization of upper layer AEMS, thus promoting further enhanced protection of perovskites against ambient moisture. As a result, the CsPbI 3 IPSCs fabricated at 45% humidity exhibit a dramatically improved efficiency of 20.09%, representing a record value for the inverted IPSCs fabricated in air with humidity over 40%. Moreover, the environmental humidity window for device fabrication can be broadened to 60%. This work provides an effective approach to stabilizing air-processed CsPbI 3 and favoring the practical industrial manufacture to further boost their cost-effective applications.
研究领域:
光伏技术
·
材料科学
·
纳米技术
·
化学工程
·
固态电子学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）