SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2016
·
IF 4.732
Yaru Hou,Junyou Yang,Qinghui Jiang,Weixin Li,Zhiwei Zhou,Xin Li,Shuqin Zhou
By dipping the mesoporous TiO 2 film in Sr 2+ solutions and subsequent annealing, a modification layer of SrTiO 3 has been formed on the surface of the mesoporous TiO 2 film, and the effect of modification on the photovoltaic characteristics of the perovskite solar cells has been studied detailedly. The XPS and TEM results verified the existence and nature of the SrTiO 3 modification layer. Benifiting from the TiO 2 surface modification, the morphology of perovskite film and light absorption of the CH 3 NH 3 PbI 3 absorber have been improved effectively, and a faster charge transfer has also been achieved between the CH 3 NH 3 PbI 3 perovskite layer and the modified TiO 2 . As a result, an average conversion efficiency of 11.4% has been achieved in the perovskite solar cell based on the modified mesoporous TiO 2 by 10 mM Sr 2+ solution, and it increases approximately by 46% in comparison with the photovoltaic efficiency of 7.8% of the perovskite solar cell based the bare mesoporous TiO 2 layer.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Xiang Li,Minghua Zhou,Yuwei Pan,Liting Xu
The abatement of chlorophenols is of great environmental importance. Though Fe 0 can activate persulfate (PS) to improve performance, our findings proved that pre-magnetized Fe 0 (Pre-Fe 0 ) could significantly enhanced the degradation and dechlorination of 2,4-dichlorophenol (2,4-DCP), and this Pre-Fe 0 /PS process was more efficient than Fe(II)/PS. The Fe 0 before and after magnetization was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), suggesting the acceleration of Fe 2+ release after magnetization. The effects of some important operating parameters such as Fe 0 dosage, PS dosage, pH, and initial 2,4-DCP concentration on the 2,4-DCP degradation and dechlorination by Pre-Fe 0 /PS were investigated and compared with that of Fe 0 /PS, observing a 1.9–5.2-fold enhancement in the degradation rate of 2,4-DCP. Although SO 4 − was the dominant active species responsible for 2,4-DCP degradation in two processes, pre-magnetization could promote more OH generation. Identified by GC–MS and IC, the degradation intermediates such as 4-chlorophenol (4-CP), 2-chlorophenol (2-CP), phenol, and some carboxylic acids were detected, and possible degradation pathway was proposed. This Pre-Fe 0 /PS process was also efficient for 4-chlorophenol and chlorobenzene degradation, obtaining a 5.2 and 3.2 folds enhancement, respectively. This work demonstrated that such a Pre-Fe 0 /PS would be very promising and environmental-friendly for organics degradation and dechlorination since pre-magnetization required no extra energy source while the introduction of Pre-Fe 0 was rather simple and no need to change the present treatment system.
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高影响因子
Solar RRL
·
2017
·Vol. 1
·期 10
·1700118
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IF 0
Junjie Ma,Xiaolu Zheng,Hongwei Lei,Weijun Ke,Cong Chen,Zhiliang Chen,Guang Yang,Guojia Fang
In recent years, photovoltaic properties of hybrid perovskite solar cells (PSCs) have led to impressive improvement. Yet, there is still remain a challenge for large scale application and commercialization. Some of the reasons are the instability of the perovskite film and the lack of large-scale and low-cost manufacture techniques for electron transport layer (ETL). Tin oxide (SnO 2 ) has emerged as a promising candidate for ETL, however, systematic exploration of its commercialized application in PSCs is still missing. Here, SnO 2 ETL is prepared through an electron beam evaporation technology under low-temperature process to realize large-scale, low-cost, and uniform manufacture. Hundreds of SnO 2 ETL substrates can be fabricated at one time, which deserves industrial deployment. As a result, PSCs based on e-beam evaporated SnO 2 ETL and Cs-containing blended perovskite absorber layer exhibit a power conversion efficiency (PCE) of up to 18.2% without any interface modification. Furthermore, the PSCs demonstrate remarkable long-term stability, which remained at 97% of its initial PCE after being stored for over 34 days. The results demonstrate the great potential of the PSCs based on e-beam evaporated SnO 2 ETLs towards commercialization.
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Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 48
·25211-25219
·
IF 8.867
Kai Lu,Yan Lei,Ruijuan Qi,Jiang Liu,Xiaogang Yang,Zuxiao Jia,Rui Liu,Yong Xiang,Zhi Zheng
Different from band edge alignment, the Fermi level mismatch induced by band bending can manipulate charge collection at the ITO/(CH3NH3)1−xCuxPbI3 heterojunctions. In this work, we employed a feasible spin-coating process to prepare copper defect compensation in CH3NH3PbI3. The related work function was shown to shift with the copper doping density by Kelvin probe force microscopy (KPFM). Next, we applied transient surface photovoltage (TSPV) spectroscopy and first-order series reactions simulations to confirm that interface charge recombination at the ITO/perovskite junction can be eliminated through Cu+ doping. Nanoelectric photoconductive AFM analysis showed enhanced charge transfer and a higher photovoltage at the ITO/Cu-perovskite junction. Owing to efficient Fermi level alignment, the ITO/(CH3NH3)1−xCuxPbI3/PCBM/Ag devices displayed high power conversion efficiencies of 15.14 ± 0.67% at ambient conditions for inverted perovskite solar cells without any hole transport layer.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2017
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IF 3.359
Xiang Li,Minghua Zhou,Yuwei Pan,Liting Xu,Zhuoxuan Tang
Advanced oxidation processes (AOPs) has great potential for wastewater treatment, but still limited in application due to their high cost for extensive reagent and energy demand, and restricted working conditions (e.g. narrow pH range). Here, AOPs based on pre-magnetization Fe 0 (Pre-Fe 0 ) were found to be highly efficient at wider pH conditions, partly solved the above problems. After pre-magnetization, Fe 0 was supposed to be easier to be corroded, which remarkably improved processes (e.g., Pre-Fe 0 /H 2 O 2 , Pre-Fe 0 /K 2 S 2 O 8 ) efficiency several to >100 folds and valid for many refractory contaminants (e.g. dyes, phenols, organic acids), compared with that conventional processes without pre-magnetization. Moreover, the process efficiency could be sustained by the recovery of magnetism of Pre-Fe 0 . Thus AOPs based on pre-Fe 0 is more promising to take place of conventional Fe 0 based AOPs since it is more efficient but does not require any change of the present water and wastewater treatment process, and does not need an extra energy source, costly materials, and complex equipment.
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高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Xiaoli Wang,Zhenlong Zhang,Jianqiang Qin,Wenjia Shi,Yuefeng Liu,Huiping Gao,Yanli Mao
In the present study, Er and Yb co-doped TiO 2 (Er-Yb:TiO 2 ) nanorod arrays were grown with a hydrothermal method , and perovskite solar cells were fabricated using them as an electron transfer material. The photovoltaic performance of the solar cells based on Er-Yb:TiO 2 was enhanced compared with that of solar cells based on un-doped TiO 2 . The power conversion efficiency of the solar cells on Er-Yb:TiO 2 increased to 13.4%, which is 20.8% higher than that of the solar cells based on un-doped TiO 2 . The experimental results indicate that the larger open circuit voltage could be due to the larger conduction band difference between Er-Yb:TiO 2 and perovskite material. The enlarged short circuit current could be attributed to the faster electron transfer, reduced recombination, and the upconversion of Er-Yb:TiO 2 NRs.
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高影响因子
ORGANIC ELECTRONICS
·
2016
·
IF 3.471
Xu Huang,Heng Guo,Jian Yang,Kai Wang,Xiaobin Niu,Xiaobo Liu
Graphene oxide (GO) with single layer was moderately reduced at 200 °C for 4 h under N 2 . Then the moderately reduced graphene oxide (rGO) water solution was employed as an additive to tune the properties of conventional poly(ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) solution. It's found that the incorporation of rGO into PEDOT:PSS nearly did not change its transparency, hydrophilic property , or the surface roughness . So, the rGO/PEDOT:PSS composite was used as a hole transport layer (HTL) to fabricate perovskite solar cells (PSCs). As a result, PSCs with rGO/PEDOT:PSS as HTL exhibit improved power conversion efficiency than that of PSCs with PEDOT:PSS as HTL. Our findings show that moderately reduced rGO/PEDOT:PSS could be an efficient HTL to improve power conversion efficiency of PSCs.
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Journal of Water Process Engineering
·
2025
·
IF 6.7
Caiyun Zhang,Jin Qian,Jiajie Wang,Xinyan Zhang,Zhuqiu Sun,Bairen Yang
Herein, a microbial consortia directed domestication approach based on degradation pathways was proposed. This approach employs intermediates capable of promoting ring-opening and dechlorination of m -dichlorobenzene ( m -DCB), in conjunction with m -DCB itself, as substrates for stepwise domestication, with the aim of overcoming the limitation of microbial activity due to the high toxicity of m -DCB. The microbial community analysis for the directed domestication of consortia domesticated that microorganisms responsible for ring-opening and dechlorination were predominant. Meanwhile, the removal efficiency (RE) of m -DCB by directed domestication microbial consortia was significantly higher than the original microbial consortia and abiotic control. To further improve the ring-opening and dechlorination performance of m -DCB, electrical stimulation was introduced as a means of enhancing the directed domestication. Performance tests showed that the highest RE and elimination capacity (EC) of m -DCB were 95.23 % and 23.77 mg/m 3 /h, at an electrical stimulation of 0.7 V, respectively. The microbial community analyses revealed that electrical stimulation led to an increase in the relative abundance of key functional genera (e.g., Rhodanobacter and Pseudomonas ) and functional genes (e.g., catE and dhaA), thereby facilitating the oxidation ring-opening and reductive dechlorination of m -DCB. Metagenomic sequencing further revealed the potential and mechanisms for enhanced biodegradation of m -DCB by the coupled approach of electrical stimulation and directed domestication. The study demonstrates that the biodegradation potential of m -DCB can be enhanced through electrical stimulation based on directed domestication, providing a strategic pathway for microbial construction and improved m -DCB removal from exhaust gases.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Xinxin Xu,Qiang Lou,Jiahao Wu,Haocheng Huang,Hao Zhang,Bosen Zhang,Maojun Sun,Lin Zhao,Jingyi Xu,Hang Zhou
Numerous issues influencing the device performance at the buried interface of perovskite solar cells exist. Modifying the interface constitutes a key to enhancing the efficiency and stability of solar cells. In this work, we propose a small molecule material, (3-bromopropyl)trimethoxysilane (BTS), as an efficient modifier for the buried interface of regular perovskite solar cells. It can interact with the −OH groups on SnO2 and the uncoordinated Pb and the formamidinium (FA) vacancies in the perovskite, thereby passivating the defects in the SnO2 and perovskite layers, improving the extraction and transportation of charge carriers at the interface, inhibiting the nonradiative recombination of charge carriers, and thereby increasing the carrier lifetime. The introduction of BTS significantly improves the performance of the solar cells, with the open-circuit voltage (Voc) reaching 1.169 V and an increase in power conversion efficiency (PCE) from 19.39% to 23.60%. Additionally, the devices with interface modification exhibit outstanding stability, retaining 85.7% of the initial PCE value after being aged for 160 days under a relative humidity of 35% at room temperature.
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PubMed
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
He Liu,Tie Liu,Xiaoyu Ma,Xiaoqi Liu,Yuanjing Wang,Jiawei Zhang,Wenkun Han,Langping Tu,Yulei Chang,Hongfei Li,Bin Li
The incorporation of two-dimensional (2D) perovskite onto the three-dimensional (3D) perovskite structure presents an effective approach for passivating surface defects, optimizing energy level alignment, and stabilizing the active layers in perovskite solar cells (PSCs), thereby facilitating the realization of highly efficient and stable devices. However, it remains a formidable challenge to achieve precise composition and controllable structure of 2D/3D perovskite heterojunctions through solution processes. Additionally, uncontrolled cation exchange among organic constituents poses challenges in controlling the precise positioning and thickness of 2D perovskite phases, resulting in mismatched band alignments and unfavorable recombination. In this study, the fabrication of deterministic 2D/3D perovskite heterojunctions is achieved using a solid-phase hot-pressing deposition method, wherein the investigation focuses on their growth mechanisms, energy level alignments, and film stabilities. The results demonstrate that a uniform 2D perovskite layer was formed on the surface of 3D perovskite layer under the influence of applied pressure and heat. The resulting 2D/3D perovskite heterojunction forms a favorable energy alignment with the adjacent carbon electrode, thereby effectively enhancing charge extraction and suppressing losses due to interface recombination. As a result, the carbon-based hole-transport-layer-free (HTL-free) PSCs based on a 2D/3D perovskite heterojunction demonstrate an outstanding power conversion efficiency (PCE) of 16.09%. Moreover, the incorporation of a 2D perovskite layer enhances hydrophobicity, leading to significant improvements in film stability. Therefore, this study presents a facile and practical approach for the fabrication of deterministic 2D/3D perovskite heterojunctions, offering potential opportunities for cost reduction and performance enhanced for PSCs.
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PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Lili Wang,Huixian Dong,Keying Zheng,Nasha Zeng,Yinhe Duan,Xi Wang,Minghua Wu
Future developments in the printing and dyeing industry will involve greenisation and personalisation. Less/no water digital technology has drawn much attention over traditional printing and dyeing for reducing carbon and emissions. Based on the solubility parameter difference between disperse dyes and monomers, divinyl polysiloxane modified polyacrylate (PSMA) with the directional migration effect for disperse dyes was prepared herein via mini-emulsion polymerisation. PSMA was used as wash-free polymer additive in the digital jet dyeing of polyester fabrics with disperse dyes, which yielded wash-free dyed fabrics with high color yield and color fastness. The results showed that PSMA achieved the optimum overall performance at a molar ratio of octamethylcyclotetrasiloxane to 1,3-divinyltetramethyldisiloxane 44:1 and divinyl polysiloxane dosage of 4 wt%. PSMA had the best tensile properties, good flexibility, certain hydrophobicity and high directional migration of disperse dyes. When the PSMA dosage was 9 wt% in the wash-free ink, the front and back color yield of the wash-free dyed fabric were 18.23 and 13.56, respectively. Compared with the fabric dyed with pure liquid disperse red, the front color yield of the wash-free dyed fabric increased by about 35.2 % and the back color yield had a little change. Its color fastness to dry/wet rubbing were improved from grade 3 to 4 and from grade 2–3 to 3, respectively. The handle of the wash-free dyed fabric basically maintained the level of original fabric.
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Journal of Materials Chemistry C
·
2024
·
IF 5.7
Liting Tao,Li Ding,Yuyang Li,Hui Liu,Meiping Gao,Deren Yang,Yanjun Fang
2D Dion-Jacobson (DJ) perovskites have attracted increasing attention in X-ray detection due to their improved charge transport properties relative to the common Ruddlesden-Popper (RP) counterparts, while maintaining commendable environmental stability. However, achieving scalable and high-throughput manufacturing of the high-performance DJ perovskite X-ray detectors presents a notable challenge. Here, we have employed a ternary-solvent-ink strategy to fabricate quasi-2D DJ perovskite films for X-ray detectors via the spray-coating process. Our results indicate that the incorporation of ionic liquid Methylammonium Acetate into the conventional binary solvent precursor, composed of N,N-Dimethylformamide and Dimethyl Sulfoxide, effectively impedes the formation of small n phases and concurrently suppresses the pinholes in the resulting DJ perovskite films, thus facilitating improved charge transport properties. Consequently, a large sensitivity of 4853 μC·Gyair−1·cm−2 and an ultralow detection limit down to 39 nGyair s-1 have been achieved in the devices under the self-powered mode, representing the best performing DJ perovskite film based X-ray detectors that operate without external bias. The results presented here signify a crucial advancement towards the scalable production of quasi-2D DJ perovskite X-ray detectors for high-performance X-ray detection applications in the future.
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危险品化学品经营许可证（带存储）