Materials Today Communications
·
2024
·
IF 3.7
Xiao Wang,Jinghua Zhou,Cui Zhang,Chaofan Zheng,Qing Zhang,Bei Liu,Zelin Jia,Tao Xue,Kunping Guo,Jin Huang,Fanghui Zhang
Fully inorganic metal halide perovskite solar cells (PSCs) exhibit high efficiency and excellent thermal stability. However, the presence of surface traps caused by oxygen vacancies in the electron transport layer leads to significant non-radiative charge recombination, which limits both the short-circuit current density ( J SC ) and photoelectric conversion efficiency (PCE). In this study, we propose a dual-purpose strategy by incorporating the multifunctional organic salt dopamine hydrochloride (DACl) as an additive into the electron transport layer. Firstly, DACl acts as a Lewis base when added to TiO 2 films, facilitating improvements in electron transport properties and resulting in higher photovoltaic quality of subsequently deposited perovskite layers. This enhancement significantly improves overall photovoltaic performance . Secondly, DACl's electron-rich aromatic structure and -NH 2 functional group can anchor undercoordinated Pb 2+ ions and passivate defects within the perovskite film. Additionally, its -OH functional group and charged ion Cl - play crucial roles in improving perovskite grain size and crystallinity . As a result of these modifications, cell efficiency increased ∼35 %, from 9.37 % to 12.70 %, while short-circuit current density increased from 15.44 mA cm −2 to 17.80 mA cm −2 at an illumination intensity of 100 mW cm −2 . These findings suggest that introducing DACl into the ETL layer is a promising approach for achieving efficient and stable PSCs.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED OPTICS
·
2024
·Vol. 63
·期 24
·6314-6321
·
IF 1.7
Yutian Liu,Junjie Yang,Yanbin Chen,Qianliu Yin,Rui Shen,Zixiang Dai,Qianyi Jiao,Zhicheng Sui,Tian Xu
Metal nanoparticles or periodic metal nanostructures exhibit localized surface plasmon resonance (LSPR) effects, widely employed in photovoltaic devices to enhance the light absorption. In this study, we used a double-metal-cladding waveguide (DMCW) structure to fabricate hexagonal metal nanostructures on the front side of the indium tin oxide (ITO) glass, positioned away from the incident light direction. We then prepared perovskite solar cells under various reaction conditions. The analysis results indicate that the metal nanostructure chip excites near-field coupling, generating strong localized fields, and enhances the light absorption through the LSPR effect. The perovskite solar cells (PSCs) with the chip structures exhibited a significant increase in short-circuit current density (${\rm J}_{\rm SC}$) and fill factor (FF), accompanied by a decrease in dark current, indicating improved photovoltaic characteristics of the cells. Altering the evaporative deposition time of the silver film and the concentration of the reaction solution led to a 12.79% increase in the power conversion efficiency (PCE) of the PSCs.
研究领域:
材料科学
·
光电子学
·
能源科学
✓ 已验证
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2025
·Vol. 113
·期 3
·942-951
·
IF 3.2
Du Tianheng,Jin Liguo
This study thoroughly investigates the effects of different solvent engineering strategies on the structure and properties of SnO 2 electron transport layers (ETLs) and evaluates their performance-enhancing effects on carbon-based all-inorganic CsPbIBr 2 perovskite solar cells (PSCs). By comparing the SnO 2 ETLs prepared with ethanol (ET-SnO 2 ) and isopropanol (IPA-SnO 2 ) solvents and constructing corresponding CsPbIBr 2 PSCs devices, we comprehensively analysed the structure, morphology, wettability, light transmittance and electronic transport properties of the SnO 2 ETLs using characterization methods such as XRD, SEM, contact angle measurement, transmission spectroscopy, steady-state fluorescence spectroscopy and electrochemical impedance spectroscopy. Combined with the J-V characteristics of the device, we revealed the mechanism of the effect of solvent engineering on the performance of PSCs. The results showed that IPA-SnO 2 exhibited better performance with lower contact angle and higher compactness, which is conducive to electron transport and reduces interfacial defects. IPA-SnO 2 also promoted the growth of CsPbIBr 2 crystals, forming larger and denser crystal structures and reducing pinhole defects. In addition, IPA-SnO 2 improves the light transmittance of the FTO substrate and the light absorption of the CsPbIBr 2 film, thereby increasing the light trapping efficiency. Finally, the IPA-SnO 2 -based PSCs achieved a PCE of 5.95%, an improvement of 25% compared to ET-SnO 2 , demonstrating good application prospects. This study provides an important experimental basis for optimizing the preparation process of SnO 2 ETL and improving the performance of carbon-based CsPbIBr 2 PSCs. Graphical
研究领域:
材料科学
·
能源技术
·
光伏器件
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wen Guo,Lixin Song,Jinhuan Jiang,Tianguang Guo,Chenyang Shi,Xin Yin,Jie Xiong
The enhancement in efficiency and stability of air-processed perovskite solar cells (PSCs) have garnered increasing attention. Carbon-based composite materials additives, due to their excellent electrical conductivity, outstanding stability and high flexibility, provide a novel idea for improving the performance of perovskite films as well as PSCs. In this study, the superfine SnO x /carbon composite nanofibers (SnO x /C NFs) with the average diameter of 26 nm was doped into perovskite films and modulating perovskite crystallization. The SnO x /C NFs provided a uniform heterogeneous nucleation site, regulate the crystal morphology of perovskite films via Sn-I coordination and O/(MA + , FA + ) electrostatic coupling, passivated the organic cations and Pb 2+ vacancy defects within the perovskite structure, and enhanced the overall quality of the films. The distinctive one-dimensional structure of SnO x /C NFs provides additional channels for charge transport, thereby facilitating more efficient charge extraction and effectively alleviating device defects. In addition, the flexible nanofibers released the residual stress and enhanced the stability of the devices. The power conversion efficiency (PCE) of the champion device with low hysteresis prepared under open-air conditions was 22.32 %. The champion device maintained initial PCE of 80.3 %, 90.6 % and 86.6 % under 55 ± 5 % RH for 1200 h, 85 °C for 500 h and AM 1.5 light illumination for 500 h, respectively. In addition, the SnO x /C NFs-based flexible-PSCs (f-PSCs) achieved a champion efficiency of 19.84 % and retained 92.13 % of their initial PCE after 300 cycles (radius = 7 mm).
研究领域:
材料科学
·
纳米技术
·
光伏技术
·
化学工程
·
固体物理
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 15
·13138-13147
·
IF 2.324
Yang Yuqian,Wu Jihuai,Guo Panfeng,Liu Xuping,Guo Qiyao,Liu Quanzhen,Luo Hui
Lead amine halide perovskite solar cells (PSCs) have become dominant photovoltaic research topic in this decade. Electron transport layer (ETL) play a crucial role on PSCs. Here, we use tin tetrachloride as Sn source to synthesize SnO 2 nanocrystals in a simple hydrothermal method. The as-synthesized SnO 2 is spin-coated on FTO substrate, and then sintered under low temperature to form the ETL of planar PSCs. The concentration of SnO 2 spin-coating solution and sintering temperature have great influence on the ETL quality and charge transportation in PSCs. Through optimized treatment (0.15 M SnO 2 , 120 °C sintering), the high quality SnO 2 ETL with a uniform coverage, appropriate thickness, less charge recombination and low resistance can be obtained. Based on the ETL, a planar PSC with FA x MA 1−x PbI 3 achieves a high power conversion efficiency (PCE) of 19.34%. In addition, the planar PSCs based on SnO 2 exhibit a stable PCE output and slight hysteresis. These researches provide a low-cost, easy strategy to fabricate tin oxide, and present potential to replace traditional titanium oxide (TiO 2 ) in PSCs in the future.
研究领域:
材料科学
·
光伏技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2023
·Vol. 39
·期 6
·1070-1076
·
IF 3.1
Liu Deye,Lu Yang,Li Xu,Liu Fengmin,Liu Xiaomin,Lu Geyu
I n this study, we synthesized a core-shell structure of up-conversion nanoparticles (UCNPs) and deposited it on the surface of fluorine-doped tin oxide (FTO). Subsequently, we assembled a series of perovskite solar cells with FTO/UCNPs/c-TiO 2 /mp-TiO 2 /MAPbI 3 /Spiro-OMeTAD/Au structures with an effective area of 0.04 cm 2 . To optimize the devices, we adjusted the concentration of UCNPs precursor. The optimized device showed a power conversion efficiency (PCE) of 16.73% and a short-circuit current density ( J sc ) of 26.94 mA/cm 2 at AM 1.5. These values are 9.20% and 10.47% higher than those of the best performing control device (15.32% for PCE and 24.12 mA/cm 2 for J sc ), respectively. Furthermore, we characterized the perovskite layer, charge transport layer, and perovskite solar cells using various analytical methods. The results showed that the addition of UCNPs not only improved the charge extraction and transfer, but also enhanced the stability of electron transport layer devices. In conclusion, our findings offer a process for optimizing perovskite cells using UCNPs and preliminarily analyzing their principles.
研究领域:
材料科学
·
能源研究
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Ruojin Zheng,Xiaoyan Gan,Kegui Li,Shenhao Zhang,Maling Xiang,Liling Guo,Hanxing Liu
In recent years, the extensive exploration of two-dimensional (2D) perovskites in the perovskite solar cell field has been driven by their remarkable humidity stability and tunable optoelectrical properties. However, the device performance in solar cells is hampered by the constraints posed by the quantum and dielectric confinement effects. In this study, ethanolamine (EA + ) with a high dielectric constant was introduced as a spacer cation to fabricate 2D perovskite (EA) 2 (MA) 4 Pb 5 I 16 films. The investigation focused on evaluating the influence of various additives on the crystallinity , surface morphology , light absorption capacity, and carrier lifetime of EA + -based perovskite thin films . By incorporating MACl as an additive, we achieved smooth and compact perovskite thin films of superior quality, leading to perovskite solar cells (PSCs) with a remarkable photovoltaic efficiency of 10.24%. Furthermore, the unencapsulated (EA) 2 (MA) 4 Pb 5 I 16 -based device maintained 83% of its original efficiency after 840 h of storage in ambient conditions, outperforming the 2D perovskite counterpart that employed phenethylamine (PEA + ) as the spacer cation with a dielectric constant of 3.314. These results convincingly demonstrate that the strategic incorporation of high dielectric constant organic cations into 2D PSCs offers a promising avenue for elevating their efficiency and humidity stability.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 9
·6456-6468
·
IF 2.779
Ni Yafei,Li Haoyue,Li Haimin,Zhuang Jia,Liu Xingchong,Zheng Ronghong,Zhao Shuangshuang,Zhang Hua,Wang Hanyu
It is crucial to promote crystallinity of active layer to improve stability and restrain non-radiative carrier recombination for high-quality perovskite solar cells (PSCs). Here, Chlorpheniramine Maleate (CM) interface layer is introduced between SnO 2 electron transport layer (ETL) and perovskite (PVK) film. The esterification between carboxyl group in CM and hydroxyl group on the surface of SnO 2 greatly enhances the surface evenness of SnO 2 , leading to enhanced smoothness of ETL; thus, the crystallinity of perovskite (PVK) film is validly improved. Meanwhile, the lone pair electrons of nitrogen element in pyridine group in CM coordinate with vacant orbit of Pb 2+ in perovskite that validly decreases the defects of active layer. Thus, the CM interface results into strong connection between PVK and ETL, which greatly enhances the performance and stability of PSCs. After CM modification, the PCE of the PSCs is increased from 19.29 to 21.12%. In addition, unencapsulated CM-modified devices demonstrate much better humidity stability than unmodified one due to high quality of the perovskite film. After 100 h under RH = 70 ± 5% in air condition, the SnO 2 -CM based device still remains 60% of its initial PCE, while the PCE of unmodified device totally breaks down after 72 h.
研究领域:
材料科学
·
能源科学
·
化学工程
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Jinhuan Jiang,Chenyang Shi,Lixin Song,Pinfan Du,Wen Guo,Jie Xiong
Non-radiative recombination due to high-density defects at the bottom of the perovskite layer and in the SnO 2 ETL layer is not favourable for charge transfer. In this work, disodium diphenylsulfone-4,4′-dichloro-3,3′-disulfonate (SDCDPS) was introduced into SnO 2 solution to prepare a high-quality pinhole-free SnO 2 film. The sulfonate of SDCDPS collaborates with diphenylsulfone to passivate uncoordinated Sn 4+ in SnO 2 ETL, which will reduce the work function (W F ) in the SnO 2 , increasing the conduction of SnO 2 film and reducing the charge recombination of pre-buried interface. Besides, the sulfonate and diphenysulfone groups also passivate the uncoordinated Pb 2+ in perovskite to increase the crystallinity of perovskite and reduce non-radiative recombination. After SDCDPS modification, the power conversion efficiency of perovskite solar cells significantly increased from 18.2% to 21.2% with hysteresis factor decreasing from 10.4% to 3.35%. Also, the modified device shows well stability due to the enhancement of perovskite crystallization and the reducing defects. Under relative humidity of ∼60%, the PCE of the unencapsulated device modified by SDCDPS remains at 81% of the initial device after 720h. This work offers a dependable method for enhancing the quality of the buried interface in PSC and to pursue productive and consistent devices.
研究领域:
材料科学
·
能源科学
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CELLULAR AND MOLECULAR MEDICINE
·
2020
·Vol. 24
·期 17
·9667-9681
·
IF 4.486
Li-Juan Wang,Lin He,Lu Hao,Hong-Lei Guo,Xiang-Peng Zeng,Ya-Wei Bi,Guo-Tao Lu,Zhao-Shen Li,Liang-Hao Hu
Chronic pancreatitis (CP) is characterized by persistent inflammation of the pancreas that results in progressive loss of the endocrine and exocrine compartment owing to atrophy and/or replacement with fibrotic tissue. Currently, the clinical therapeutic scheme of CP is mainly symptomatic treatment including pancreatic enzyme replacement, glycaemic control and nutritional support therapy, lacking of specific therapeutic drugs for prevention and suppression of inflammation and fibrosis aggravating in CP. Here, we investigated the effect of isoliquiritigenin (ILG), a chalcone-type dietary compound derived from licorice, on pancreatic fibrosis and inflammation in a model of caerulein-induced murine CP, and the results indicated that ILG notably alleviated pancreatic fibrosis and infiltration of macrophages. Further in vitro studies in human pancreatic stellate cells (hPSCs) showed that ILG exerted significant inhibition on the proliferation and activation of hPSCs, which may be due to negative regulation of the ERK1/2 and JNK1/2 activities. Moreover, ILG significantly restrained the M1 polarization of macrophages (RAW 264.7) via attenuation of the NF-κB signalling pathway, whereas the M2 polarization was hardly affected. These findings indicated that ILG might be a potential anti-inflammatory and anti-fibrotic therapeutic agent for CP.
研究领域:
药理学
·
病理学
·
免疫学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 6
·1-11
·
IF 2.8
Ni Yafei,Li Haimin,Li Ming,Liu Xingchong,Wang Hanyu,Lei Yue,Liu Shuqian,Tang Yanling
Perovskite solar cells (PSCs) have received extensive attention due to their excellent photovoltaic properties. However, existence of defects, such as Pb 2+ and I − vacancies, restricts its further improvement of power conversion efficiency (PCE) and affects the stability of PSCs devices. In this study, glycine methyl ester hydrochloride (GMEH) was introduced as interface modification material. As Lewis base, GMEH formed a chemical bonding of Pb–O with perovskite to decrease uncoordinated Pb 2+ defects, thus transfer of charge carriers was obviously facilitated, indicating that status of Pb 2+ in perovskite structure is one of key factors for carrier transportation. Meanwhile, amino group in GMEH combined with iodide to form hydrogen bond, thereby stabilized perovskite structure and decreased ion migration. Eventually, a champion efficiency of 21.94% was obtained with promoted short-circuit current ( J SC ) and fill factor (FF). Meanwhile, the stability of PSCs was significantly improved. The modified PSCs can maintain 90% of the initial efficiency after storing in a nitrogen filled glove box for 1700 h, while the control one can only maintain 55%. And the stability of the modified device in humid air was also greatly improved.
研究领域:
材料科学
·
光伏技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yange Li,Zhenlong Zhang,Huafang Zhang,Yuefeng Liu,Huiping Gao,Yanli Mao
Most of the reported perovskite solar cells (PSCs) with high efficiency are based on the (100) facet-dominated FAPbI3 perovskite films due to their easy formation. Recent reports demonstrate that the (111) facet is more stable and more invulnerable to cationic migration than the (100) one. However, the fabrication of (111) facet-dominated perovskite is challenging. Herein, we prepared the (111) facet-dominated perovskite films by a two-step method. In the first step, an additive of 6,6′-dimethyl-2,2′-bipyridyl (DMBP) was added to the PbI2 solution, which interacts with PbI2 by a chemical bonding between Pb+ and N– in its pyridine rings, regulating the microstructure of the PbI2 film. The experimental results demonstrate that the obtained perovskite film is (111) facet-dominated. Moreover, the DMBP additive reduces the number of defects and improves the energy band structure of the perovskite. The devices based on the (111) facet-dominated perovskite achieve a high efficiency of 24.11%, which is larger than that of the control (22.55%). In addition, the stability of the devices is enhanced by the DMBP additive.
研究领域:
材料科学
·
纳米技术
·
光伏技术
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）