ACS Applied Energy Materials
·
2023
·
IF 6.4
Yahong Xie,Ke Zhao,Haobin Wang,Ying Qi,Peng Wei,Jian Cheng
SnO2 is considered as a promising electron transport material for carbon-based perovskite solar cells (C-PSCs) due to its excellent electron mobility, stability over TiO2, and low-temperature processing. However, the lattice mismatch and poor contact quality of the SnO2/CH3NH3PbI3 interface, as well as oxygen vacancies, usually lead to nonradiative recombination and limit the further improvement of photovoltaic performance. In this paper, two chitosan derivatives, chitosan quaternary ammonium salt (HACC) and carboxymethyl chitosan (CMCS), were used as additives for SnO2 to adjust the energy level and improve the contact performance of the SnO2/CH3NH3PbI3 interface. These two additives have suitable terminal active functional groups, amino group and hydroxyl group, which can interact with SnO2 and CH3NH3PbI3 at the interface, induce the crystal growth of the perovskite, and play a good role in passivating interfacial defects. Therefore, the interfacial contact and the charge-transfer ability were effectively enhanced. As a result, the addition of HACC and CMCS increased the PCE of C-PSCs from 10.17 to 12.42 and 13.39%, and the repeatability and long-term stability of the corresponding unencapsulated C-PSCs were also significantly improved. This work expands the vision for the future interface modification strategies to improve the device performance and is conducive to promote the further commercialization of C-PSCs.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Yue Zhao,Shujie Jiao,Shuo Liu,Yimin Jin,Song Yang,Xianghu Wang,Tong Liu,Hongyan Jin,Dongbo Wang,Shiyong Gao,Jinzhong Wang
All-inorganic perovskite photodetectors aroused widespread attention due to the splendid photoelectric characteristics and stability. However, the inherent defects in perovskite films hinders the progress of the photodetectors. Here, a Lewis base of thioacetamide additive was used to passivate defects in CsPbBr 3 perovskite films based on Lewis acid-base interactions. The quality of the film has been distinctly enhanced due to the interaction between the S donor in thioacetamide and the uncoordinated Pb 2+ in perovskite, diminishing the defect state density and inhibits the non-radiative recombination. The self-powered champion device based on CsPbBr 3 film contain optimum thioacetamide additive exhibits a lower dark current density of 4.01 nA/cm 2 , a peak responsivity of 0.39 A/W, a rapid rise/decay time of 12.4 μs/56.2 μs, a peak detectivity of 1.08 × 10 13 Jones and a lager linear dynamic range of 99 dB, which are much better than photodetector based on CsPbBr 3 perovskite without TAA additive. Furthermore, it exhibits high-resolution imaging sensing capability at zero bias. This research affords guidance for the performance improvement and application of all-inorganic perovskite photodetectors.
✓ 已验证
产品关联
DOI
高影响因子
Micromachines
·
2023
·Vol. 14
·期 7
·1368
·
IF 3.4
Yan Lang,Shuru Xu,Chunbin Zhang
In this paper, a molybdenum disulfide fluorescent probe with an Fe3+fluorescent system was first synthesized by the hydrothermal method for the detection of iron ion concentration in oral solution of protein succinate. It was characterized by infrared, fluorescence, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The probes were found to have good stability, photobleaching, and storage stability. The effects of dilution, pH, reaction time, and iron ion concentration on the fluorescent system were also investigated. The relative fluorescence intensity [(I0− I)/I0] showed a good linear relationship with the iron ion concentration in the range of 0–50 μM, with the linear equation [(I0− I)/I0] = 0.0148[Fe3+] + 0.0833 (r2= 0.9943, n = 11) and the detection limit of 2.43 μM. The reaction mechanism was also explored, as well as its ion selectivity, reversibility, accuracy, precision, and concentration of Fe ions in the actual sample. It was found that the probe can selectively detect Fe ions with a certain degree of reversibility, accuracy, precision, and ideal recovery, and it can be used for the determination of Fe3+in proteosuccinic acid oral solution.Keywords:MoS2quantum dots;fluorescent probe;Fe3+;performance;protein succinic acid oral solution
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jingyang Lin,Yantao Wang,Abdul Khaleed,Ali Asgher Syed,Yanling He,Christopher C. S. Chan,Yin Li,Kuan Liu,Gang Li,Kam Sing Wong,Jasminka Popović,Jing Fan,Alan Man Ching Ng,Aleksandra B. Djurišić
Various phosphonic acid based self-assembled monolayers (SAMs) have been commonly used for interface modifications in inverted perovskite solar cells. This typically results in significant enhancement of the hole extraction and consequent increase in the power conversion efficiency. However, the surface coverage and packing density of SAM molecules can vary, depending on the chosen SAM material and underlying oxide layer. In addition, different SAM molecules have diverse effects on the interfacial energy level alignment and perovskite film growth, resulting in complex relationships between surface modification, efficiency, and lifetime. Here we show that ethanolamine surface modification combined with [2-(9H-carbazol-9-yl)ethyl]phosphonic acid (2PACz) results in significant improvement in device stability compared to devices with 2PACz modification only. The significantly smaller size of ethanolamine enables it to fill any gaps in 2PACz coverage and provide improved interfacial defect passivation, while its different chemical structure enables it to provide complementary effects to 2PACz passivation. Consequently, the perovskite films are more stable under illumination (slower photoinduced segregation), and the devices exhibit significant stability enhancement. Despite similar power conversion efficiencies (PCE) between 2PACz only and combined ethanolamine-2PACz modification (PCE of champion devices ∼21.6–22.0% for rigid and ∼20.2–21.0% for flexible devices), the T80 lifetime under simulated solar illumination in ambient is improved more than 15 times for both rigid and flexible devices.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Qian Li,Jiahui Zhang,Jiayu Zhou,Wang Xu,Zhuowei Cheng,Piet N.L. Lens,Jianmeng Chen,Dongzhi Chen
The effective and economic treatment of chlorobenzenes has become one of the most intractable issues in the field of air pollution control. Herein, a visible-light photocatalysis coupled with biodegradation (VPCB) system was developed by integrating an innovative visible-light responsive TiO 2 /oxygenous groups decorated g-C 3 N 4 (TiO 2 /OCN) with polyurethane carriers immobilized with Ralstonia sp. XZW-1 for chlorobenzene removal. Performance tests showed that light intensity, preparation of the MICs, catalyst dosage and composition of the TiO 2 /OCN cast significant influence on chlorobenzene removal efficiency, with the degradation efficiency, mineralization and dechlorination ratios of VPCB achieving 100%, 35.5%, and 99.4% under the optimal conditions, respectively, outcompeting the sum of visible-light photocatalytic system and biodegradation protocols. Cycling tests further demonstrated the excellent stability of VPCB. Mechanism analysis found that increased reactive sites, improved visible-light harvesting, accelerated charge transfer and separation, and the resulting abundant active species jointly contributed to the enhanced photocatalytic activity of TiO 2 /OCN. Photogenerated holes were most significant active species for chlorobenzene removal, followed by OH and O 2 − radicals. The carriers could effectively protect microorganisms from light illumination and strong oxidizing species, allowing the further microbial metabolism of chlorobenzene photocatalytic oxidation intermediates with good biodegradability, not only greatly promoting the microbial growth and activity, but further enhancing chlorobenzene photocatalytic degradation. Plausible synergistic mechanism for chlorobenzene degradation between photocatalysis and biodegradation was also revealed. Furthermore, the VPCB system constructed presented wide applicability towards various pollutants, and its performance was found closely related with the hydrophobicity of pollutants. This work provided insight into the design and application of the VPCB system for the efficient and economic treatment of refractory pollutants.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 34
·2301920
·
IF 19
Yaqing Li,Xiayao Lu,Yantao Mei,Chen Dong,Deepak Thrithamarassery Gangadharan,Kong Liu,Zhijie Wang,Shengchun Qu,Makhsud I. Saidaminov,Weifeng Zhang,Furui Tan
Perovskite solar cells with carbon electrode have a commercial impact because of their facile scalability, low-cost, and stability. In these devices, it remains a challenge to design an efficient hole transport layer (HTL) for robust interfacing with perovskite on one side and carbon on another. Herein, an organic/inorganic double planar HTL is constructed based on polythiophene (P3HT) and nickel oxide (NiOx) nanoparticles to address the named challenge. Through adding an alkyl ammonium bromide (CTAB) modified NiOx nanoparticle layer on P3HT, the planar HTL achieves a cascade type-II energy level alignment at the perovskite/HTL interfaces and a preferential ohmic contact at NiOx/carbon electrode, which greatly benefits in charge collection while suppressing charge transfer recombination. Besides, compared with the single P3HT layer, the planar composite enables a robust interfacial contact by protecting perovskite from being corroded by carbon paste during fabrication. As a result, the blade-coated FA 0.6 MA 0.4 PbI 3 perovskite solar cells (fabricated in ambient air in fume hood) with carbon electrode deliver an efficiency of 20.14%, the highest value for bladed coated carbon and perovskite solar cells, and withstand 275 h maximum power point tracking in air without encapsulation (95% efficiency retained).
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 21
·11377-11387
·
IF 11.9
Chao Zhou,Yonglei Han,Lei Cheng,Ruijie Ma,Fei Wang,Shuchen Weng,Guicheng Yu,Fang Lin,Kang Zhou,Hanlin Hu,Xiao Liang,Yongfei Wang,Haoran Lin,Gang Li
Two-dimensional (2D) Dion–Jacobson (DJ) halide perovskites are being intensively investigated owing to their superior stability compared with 2D Ruddlesden–Popper (RP) perovskites. Although various organic cations have been reported to form 2D DJ perovskites, their structure–property relationships are rarely studied. In this work, two novel organic cations MDAN (4,4′-methylenedianilinium) and EDAN (4,4′-ethylenedianilinium) were applied to form quasi-2D DJ perovskites with nominal layer number n = 6. An (EDAN)MA5Pb6I19:0.15MACl based inverted solar cell achieved a power conversion efficiency (PCE) of 13.2%, outperforms the 9.6% PCE achieved by a (MDAN)MA5Pb6I19:0.15MACl based device. The formation of quasi-2D perovskites with high-n values was observed for both compounds, while the superior performance is demonstrated by the (EDAN)MA5Pb6I19:0.15MACl based device, which could be attributed to its better film morphology and lower defect density. Intriguingly, we found that EDAN based quasi-2D perovskites were evenly distributed in the film while MDAN based quasi-2D perovskites concentrated near the film surface, accounting for an unfavorable electronic band alignment of the latter. Both (MDAN/EDAN)MA5Pb6I19:0.15MACl films remained unchanged in air with 50% relative humidity for 20 days. This work not only presents a decent device performance, but also explores understanding of tuning morphology towards high-efficiency quasi-2D Dion–Jacobson perovskite solar cells.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Wanlong Wang,Rong Liu,Chen Dong,Yunmin Xie,Minlin Jiang,Guohua Dong,Hang Zhou
Aluminum-doped zinc oxide (AZO) is a promising substrate for perovskite solar cells (PSCs) because of its low cost, easy accessibility, and good conductivity. However, its relatively low transmittance with low resistance and inevitable reflectance loss makes it unfavorable for high-performance AZO-based PSCs. Herein, a simple and effective strategy that textures the surface of AZO substrate via a diluted HCl etching, is developed to boost PSC performance. The textured AZO substrate exhibits greater haze, higher transmittance, and lower reflectance for permitting more photons to reach and be absorbed within PSCs. In addition, the textured AZO substrate not only exhibits improved surface wettability that can enhance the buried interfacial contact and enable the growth of high-quality perovskite film, but also possesses reduced oxygen vacancies and lower work function (WF) that can suppress the recombination and reduce the energy barrier for electron extraction. As a result, the PSC on textured AZO substrate shows improved fill factor (FF, 70 %) and enhanced short-circuit current density (J sc , 23.7 mA/cm 2 ) compared with the reference cells (63 % and 21.1 mA/cm 2 ), yielding a much-increased power conversion efficiency (PCE) from 13.9 % to 17.6 %. The present work opens the door for the employment of AZO substrate in future commercialization of PSCs.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jia Sun,Yinsheng Gu,Yingwei Lu,Juntao Hu,Tao Chen,Changfei Zhu,Paifeng Luo
Nowadays, the MA-FA mixed-cation perovskite solar cells (PSCs), demonstrating much higher stability than that of single-cation MAPbI 3 or FAPbI 3 , are still encountering a low-efficiency issue. The main reason is that there existing a lot of defects in SnO 2 electron transport layers (ETLs) and perovskite absorbers. Herein, we develop a synergistic strategy of Rubidium Chloride (RbCl) doping and 4- tert -butylbenzylammonium iodide (tBBAI) passivation to fabricate high-performance MA x FA 1-x PbI 3 mixed-cation PSCs. The alkali halide RbCl is first selected as a novel doping additive to regulate the film properties of SnO 2 and perovskites. Research shows that the negative Cl - ions can combine with uncoordinated Sn 4+ ions due to their strong bonding ability, which can passivate the oxygen-vacancy-related defects and enhance the charge transport of SnO 2 ETLs. Meanwhile, the doped Rb + and Cl - ions may diffuse into perovskite lattices to promote grain growth and reduce the defects of perovskites. Besides, we employ an organic halide salt tBBAI to passivate perovskites and suppress surface defects. Results of deep level transient spectroscopy (DLTS) indicate that SnO 2 and SnO 2 -RbCl based devices have deeper hole traps and large trap densities (Δ E = 0.92 eV, N T = 1.10 × 10 16 cm −3 ; ΔE = 0.93 eV, N T = 2.16 × 10 15 cm −3 ); while tBBAI-treated SnO 2 -RbCl-based devices own a shallower hole trap and a smaller trap density ( ΔE = 0.72 eV, N T = 2.44 × 10 13 cm −3 ); and the corresponding I Pb and I (MA/FA) antisite defeats are also identified. Therefore, our synergistic strategy is effectively able to reduce the defect density and suppress the non-radiative recombination. Consequently, the best-performance MA 0.85 FA 0.15 PbI 3 PSCs achieve an impressive power conversion efficiency (PCE) of 22.54% with a large open circuit voltage ( V oc ) of 1.16 V, which are by far the highest values of MA 0.85 FA 0.15 PbI 3 mixed-cation PSCs.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 26
·8942-8951
·
IF 6.4
Ningxia Gu,Ye Feng,Lixin Song,Pengyun Zhang,Pingfan Du,Lei Ning,Zeyuan Sun,Hua Jiang,Jie Xiong
Organic–inorganic perovskite solar cells (PSCs) have attracted widespread attention in improving photovoltaic efficiency during the past decade, yet the stability and defect passivation engineering of PSCs are still challenging. Herein, a novel dye N-(4-(phenyldiazenyl)phenyl) acetamide (Ph-azo-PhAmi) was synthesized and introduced as a passivator into a perovskite to reduce the defects and enhance the efficiency. The amide group in Ph-azo-PhAmi could interact with the defects of the perovskite, resulting in the decreased trap states and suppressed non-radiative recombination. Due to the azo bond, the Ph-azo-PhAmi possessed π-conjugated properties, and could form steady-state polymer-like structures by π–π stacking to enhance the passivation effect. As a result, the power conversion efficiency (PCE) of PSCs based on Ph-azo-PhAmi increased to 20.85% with matched energy levels and negligible hysteresis. The unencapsulated PSCs with Ph-azo-PhAmi retained 85.7% of the initial PCE after storage in ambient air (room temperature, 65–75% relative humidity) under dark conditions for 300 h, revealing a significantly enhanced ambient stability compared with the pristine PSCs (26.9%). This work provides a promising method for fabricating high-performance and well-stability PSCs based on a dye additive.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Miaoyu Lin,Jingjing He,Xinyi Liu,Qing Li,Zhanpeng Wei,Yuting Sun,Xuesong Leng,Mengjiong Chen,Zhuhui Xia,Yu Peng,Qiang Niu,Shuang Yang,Yu Hou
In recent years, perovskite solar cells (PSCs) have propelled into the limelight owing to rapid development of efficiency; however, the abundant defects at the perovskite grain boundaries result in unwanted energy loss and structural degradation. Here, the grain boundaries of perovskite polycrystalline films have been found to act as nanocapillaries for capturing perovskite quantum dots (PQDs), which enable the conformal assemble of PQDs at the top interspace between perovskite grains. The existence of PQDs passivated the surface defects , optimized the interfacial band alignments, and ultimately improved the power conversion efficiency from 19.27% to 22.47% in inverted PSCs. Our findings open up the possibility of selective assembly and structural modulation of the perovskite nanostructures towards efficient and stable PSCs.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Hao Li,Yingwei Li,Ruirui Wang,Sheng Zhong,Ruirui Zhang,Ruixia Liu
Oxygen vacancies (OVs) engineering is essential in the regulation of the structure and properties of the catalysts for selective oxidation. In this work, the strategy of ionic liquid (IL) mediation was successfully developed in constructing the OV-rich defective Co3V2O8 (CVO), exhibiting excellent performance in cyclohexane oxidation. Coupling the prepotency of the heating treatment, ILs constructed optimal [Bmim][Ac]-CVO-700 possesses the highest OV concentration and catalytic activity with 12.7% cyclohexane conversion accompanied by 89.6% KA oil (cyclohexanol and cyclohexanone) selectivity. Experimental investigation reveals that ILs not only regulates the morphology structure as structure-directing agents but also benefits the formation of OVs through coordination with the Co2+ and V5+. The redox cycle between Co3+/Co2+ and V5+/V4+ was accelerated via the constructed OVs, enhancing the activation of substrates and the transfer of electrons. The distinguished performance is attributed to the rich OVs, porous structure, and synergistic effect between the active metals. The structure–activity relationship between OVs concentration and cyclohexane conversion further indicated that OVs facilitate the essential steps for the generation of targeted products. The possible reaction pathway of cyclohexane oxidation over the OV-rich CVO catalyst was also suggested regarding the radical trapping experiment. This design not only presents a facile and effective strategy for constructing OVs using ILs but also provides an in-depth insight into OV-rich mixed metal oxides in selective oxidation.
✓ 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）