Advanced Energy Materials
·
2018
·Vol. 8
·期 23
·1800758
·
IF 21.875
Haixia Rao,Senyun Ye,Feidan Gu,Ziran Zhao,Zhiwei Liu,Zuqiang Bian,Chunhui Huang
All-inorganic cesium lead halide (CsPbX 3 ) perovskites have emerged as promising photovoltaic materials owing to their superior thermal stability compared to traditional organic–inorganic hybrid counterparts. However, the CsPbX 3 perovskites generally need to be prepared at high-temperature, which restricts their application in multilayer or flexible solar cells. Herein, the formation of CsPbX 3 perovskites at room-temperature (RT) induced by dimethylsulphoxide (DMSO) coordination is reported. It is further found that a RT solvent (DMSO) annealing (RTSA) treatment is valid to control the perovskite crystallization dynamics, leading to uniform and void-free films, and consequently a maximum power conversion efficiency (PCE) of 6.4% in the device indium tin oxide (ITO)/NiO x /RT-CsPbI 2 Br/C 60 /Bathocuproine (BCP)/Ag, which is, as far as it is known, the first report of RT solution-processed CsPbX 3 -based perovskite solar cells (PSCs). Moreover, the efficiency can be boosted up to 10.4% by postannealing the RTSA-treated perovskite film at an optimal temperature of 120 °C. Profiting from the moderate temperature, flexible PSCs are also demonstrated with a maximum PCE of 7.3% for the first time. These results may stimulate further development of all-inorganic CsPbX 3 perovskites and their application in flexible electronics.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Qichen Zhao,Honglie Shen,Yajun Xu,Kai Gao,Dewen Chen,Yufang Li
Flexible CZTS solar cells have attracted significant attention in recent years owing to their high earth element composition and high photovoltaic conversion efficiency. However, these cells are associated with limitations common in compound thin-film solar cells, such as heterojunction interface combination centers, material defects, and energy level mismatch. In the current study, a green and simple solution spin-coating method is proposed for the preparation of flexible solar cells with multicycle CZTS/CCZTS absorber stacked structures to effectively circumvent the limitations of flexible devices. The results showed that the optimized Zn/Cd ratio results in CCZTS films with large grain longitudinal growth. However, lots of small broken grains were formed at the bottom of the absorber owing to the large lattice spacing, leading to the formation of cell leakage channels. The surface morphology of the absorber film was improved by preparing a stacked structure of CZTS and CCZTS with different periods while suppressing the longitudinal grain delamination. The stacked structure also helps to match the energy band of CZTS/CCZTS/CdS heterojunction. The top layer of CCZTS forms a buffered “energy band ladder” in the energy band of the CZTS/CdS heterojunction, thus suppressing the rapid carrier recombination caused by the Cliff-type energy band bending. A flexible solar cell was thus prepared to obtain a high photoelectric conversion efficiency of 6.51%, and the cells showed excellent resistance to mechanical bending.
研究领域:
材料科学
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光伏技术
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纳米技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yao Tan,Bo Xiao,Peng Xu,Yubo Luo,Qinghui Jiang,Junyou Yang
Inorganic perovskite CsPbBr3 has broad application prospects in photovoltaic windows, tandem cells, and other fields due to its intrinsic semitransparency, excellent photoelectric properties, and stability. In this work, a high-quality semitransparent CsPbBr3 film was prepared by a sequential vacuum evaporation deposition method without high-temperature annealing and successfully used as the active layer of flexible perovskite solar cells (F-PSCs) for the first time, achieving a power conversion efficiency (PCE) of 5.00%. By introducing an energy-level buffer layer of Cu2O between CsPbBr3 and Spiro-OMeTAD, the champion PCE has been further improved to 5.67% owing to the reduction of electron–hole recombination and enhanced charge extraction. The optimized devices present higher stability, which can maintain more than 95% of the initial efficiency even after continuous heating at 85 °C for 240 h. Moreover, the F-PSCs also exhibit excellent mechanical durability, and 90% of the original PCE can be retained after 1000 bending cycles at a curvature radius of 3 mm.
研究领域:
材料科学
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光伏技术
·
能源工程
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Li-Wei Su,Ming-Hao Liu,Yang Jing,Peng-Yu Huang,Bo Jiang,Rui-Guang Xing,Xin Ge,Ya-Hui Li,Jin-Xiao Bao,Gao-Fei Pan
With the development of new energy industry and the promulgation of environmental protection decrees, synthesize the recyclable, high performance functional polymers is becoming particularly important. Here, a multifunctional flame retardant NEDP was designed, and the recyclable TPU-DP composites prepared with NEDP, which had excellent flame retardancy, luminescence, mechanical properties and transparency. With the addition of 9 % NEDP, the TPU-DP composite successfully passed the UL-94 V-0 rating and the Limiting oxygen index (LOI) value increased to 30.3 %. Besides, the TPU-DP present excellent photoluminescent properties, emits visible blue fluorescence under UV excitation, and maintains >80 % light transmission. What's more, the TPU-DP composite also maintains good mechanical properties and recyclability, which is conducive to sustainable development. Mechanistic studies indicate that the excellent flame retardancy of NEDP credit due to the combined effect of the carbonization layer barrier in the condense phase and the flame burst in the gas phase. We apply it in flexible solar cell film, which improves the fire safety of flexible solar cells and protects the cells from external damages, and the recyclability ensures the sustainable development of the green industry. More importantly, using the luminous TPU-DP film, the photovoltaic conversion efficiency of flexible solar cells increased by 0.8 %, making up for the shortcomings of the photovoltaic conversion efficiency of flexible solar cells. Thus, the TPU-DP composites are expected to promote the green and sustainable development of modern energy industry, and have significant commercial value and theoretical significance.
研究领域:
材料科学
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能源科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY
·
2017
·
IF 4.018
Di Liu,Yuelong Li,Biao Shi,Xin Yao,Lin Fan,Shanzhen Zhao,Junhui Liang,Yi Ding,Changchun Wei,Dekun Zhang,Ying Zhao,Xiaodan Zhang
A smooth perovskite film fully covering the substrate is of importance for flexible perovskite solar cells (PSCs). In this study, efficient flexible PSCs are fabricated onto conductive plastic substrate by a two-step coating method under ambient condition. By adjusting the concentration of precursor CH 3 NH 3 I (MAI), the morphology and thickness of perovskite layer is effectively tailored, according to SEM and AFM analysis, which consequently gives rise to a thin perovskite layer with smooth surface and smaller grain size. As a result, flexible PSCs with efficiency of 12.7% are prepared under ambient condition, and the excellent mechanical stability of flexible PSCs is also demonstrated with bending test under severe conditions.
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
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Xiangyang Liu,Shun Wang,Xinsheng Liu,Xiaotao Zhao,Yuzong Gu
The inhibition of the rapid recombination of photochemical charges at heterointerfaces and the promotion of transfer and extraction are central to photoelectric conversion in solar cells. With the use of Cu4Bi4S9 nanoribbons–graphene sheets (CBS–GSs) as a hybrid photosensitive layer and the growth of ZnO nanowires on Zn2SnO4 nanowires (ZTO–ZnO) for the electron transfer layer, a flexible solar cell ZTO–ZnO/CBS–GSs was prepared on a stainless steel mesh. In this study, time-resolved fluorescence spectroscopy (TFS) and transient surface photovoltage (TPV) were used to describe the transition and transport process for the photogenerated carriers. With a high fill factor (0.76) and improved electron mobility for the ZTO–ZnO nanostructure, a high photoelectric conversion efficiency of 11.6% was obtained, which was evidently higher than that of a ZTO/CBS–GSs cell (9.2%) and a ZnO nanoparticles/CBS–GSs cell (3.9%). The efficient dissociation of photogenerated carriers at CBS–GSs interfaces, rapid transfer of free electrons in the ZTO–ZnO system, and fast extraction of holes from the selective NiO layer with an optimized architecture led to a superior performance. The charge recombination at the interface can be determined by electrochemical impedance spectroscopy (EIS). Active exploration via inevitable competition between charge separation and recombination (TFS, TPV, EIS, etc.) can provide insights into the entire dynamic process and a separation mechanism for photoinduced carriers, which can also promote the application of flexible thin-film solar cells.
研究领域:
材料科学
·
物理化学
✓ 已验证
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2025
·
IF 6.3
Rufeng Wang,Jian Ni,Shuai Zhang,Miao Yan,Haoxuan Li,Xinyu Song,Guijun Li,Yaofang Zhang,Juan Li,Hongkun Cai,Jianjun Zhang
Flexible perovskite solar cells (f-PSCs) are desired for portable electronic applications owing to their light weight and high power-to-weight properties. Nevertheless, the development of perovskite quantum dots (PQDs)-based flexible solar cells is still lagging behind. Herein, a sequential ligand exchange strategy induced by dipropylamine (DPA) and benzoic acid (BA) is proposed to treat the surface chemistry of FAPbI 3 PQDs, which enables to realize efficient and stable flexible PQD solar cells through one-step-fabricated techniques. The FAPbI 3 PQD films exhibit enhanced electronic coupling and suppressed carrier non-radiation recombination, contributing to the efficient flexible FAPbI 3 PQD solar cells with an impressive power conversion efficiency (PCE) of 12.13 % (14.27 % on the rigid substrate) on a 0.06 cm 2 scale, 11.13 % on a 0.12 cm 2 scale, 10.33 % on a 0.49 cm 2 scale, and 9.96 % on a 0.98 cm 2 scale, along with improved environmental stability. Meanwhile, the corresponding flexible PQD device maintained ∼90 % of its initial PCE after 100 bending cycles (7 mm bending radius). Moreover, systematic studies further reveal that ligand-capped PQDs exhibit extraordinary mechanical stability compared to bulk thin films, compatible well with flexible photovoltaic applications. This work contributes to a new avenue for developing high-performance QD flexible electronics in the foreseeable future.
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
Joule
·
2024
·
IF 38.6
Yaohua Wang,Yuanyuan Meng,Chang Liu,Ruikun Cao,Bin Han,Lisha Xie,Ruijia Tian,Xiaoyi Lu,Zhenhua Song,Jun Li,Shuncheng Yang,Congda Lu,Ziyi Ge
Summary Organometallic halide perovskites are promising candidates for high-performance flexible perovskite solar cells (f-PSCs). However, f-PSCs still face significant challenges in the formation of uniform and highly crystalline films with mechanical robustness. Here, a zwitterion elastomer (SBMA) was introduced into a perovskite film. SBMA cross-linked in situ to regulate the nucleation and crystallization of the perovskite by forming an intermediate SBMA-PbI 2 adduct. In addition, the polar sulfo-end group on SBMA offered chemical passivation to perovskite vacancies and created a large dielectric environment, screening the carrier capture process and suppressing nonradiative recombination. The zwitterionic fusion within the cross-linked elastomers, residing on grain boundaries, endowed the flexible perovskite films with instantaneous self-curing ability under mild treating conditions (40°C for 15 min). The resultant device achieved a record-breaking power conversion efficiency (PCE) of 24.51% (certified 24.04%) and demonstrated excellent mechanical sustainability and durability, retaining over 90% of the initial PCE after 10,000 bending cycles.
研究领域:
材料科学
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能源技术
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光电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 44
·20654-20671
·
IF 4.682
Ning Lei,Song Lixin,Wen Xian,Gu Ningxia,Du Pingfan,Yu Jinchao,Xiong Jie
Flexible perovskite solar cells were potential photovoltaic technologies for achieving wearable power sources with excellent power conversion efficiency (PCE) and continuous roll-to-roll processability. However, the inherent fragile property and poor crystallinity of perovskite films on flexible substrates leaded to inferior photovoltaic performance, which impeded their application in wearable devices. Herein, a biodegradable polymer macromolecule, poly(D, L-lactide) (PDLLA), was doped into perovskite precursor solution to prepare perovskite films with favorable bendable and stretchable properties as well as the corresponding flexible PSCs. Extensive theoretical calculations and experimental analysis unraveled that the carbonyl (C = O) groups of PDLLA cross-linkers and undercoordinated Pb 2+ defect sites of perovskite films were chemically coupled through C = O···Pb coordination bond and the hydroxyl (O–H) groups at the end of PDLLA molecules anchored perovskite via O–H···I hydrogen bonding interaction. The strong chemical interactions could govern perovskite crystallization to modulate the films morphology, thus prompting the photovoltaic performance of PSCs. Furthermore, this cross-linking structure was instrumental in suppressing perovskite grain boundaries defects to minimize nonradiative recombination and advancing the film flexibility to enhance environmental and mechanical stability of the devices. Consequently, the optimized devices were fabricated in open-air conditions with desirable efficiencies of 18.94% on a rigid substrate and 16.61% on the corresponding flexible substrate. Since the strong chemical interaction between PDLLA additives and perovskites, the as-fabricated flexible devices assembled on the PET/ITO substrate exhibited favorable bending property, retaining 92.1% of the initial PCE after 2000 bending cycles within a bending radius of 2 mm, suggesting the benign mechanical stability of PSCs. This provided a guide for improving the flexibility of perovskite films for the purpose of the realization of the wearable electronic device. Graphical Abstract PDLLA accumulated at the grain boundary regions cross-links the neighboring perovskite crystals via C = O···Pb coordination bond and O–H···I hydrogen bonding interaction. The suitable molecular chemical chelation can simultaneously coordinate the defects accumulated at the grain boundaries and suppress the ion migration to optimize the photovoltaic performance and the mechanical stability.
研究领域:
材料科学
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能源科学
·
化学工程
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 12
·2212627
·
IF 19
Hui Deng,Yingshun Cheng,Zekun Chen,Xiao Lin,Jionghua Wu,Qiao Zheng,Caixia Zhang,Shuying Cheng
Antimony sulfide (Sb 2 S 3 ) with a 1D molecular structure has strong bending characteristics, showing great application potential in flexible devices. Herein, the flexible substrate-structured Sb 2 S 3 solar cells is developed and improve device performances by the back interface selenization. The high-quality Sb 2 S 3 film with an optimal thickness of 1.8 µm, ensuring efficient spectra utilization, is deposited on flexible Mo foils by the rapid thermal evaporation technique. To solve the issues of back interfacial recombination and charge transport, the 20 nm MoSe 2 layer between Sb 2 S 3 film and Mo foil is fabricated by substrate selenization in the tube furnace. Further investigations indicate that the MoSe 2 layer improves the interfacial energy band alignments and induces the [hk1] orientation of Sb 2 S 3 film, thereby passivating defects and enhancing the carrier transport capacity. The flexible solar cell in the structure of Mo foil/MoSe 2 /Sb 2 S 3 /CdS/ITO/Ag, exhibiting good flexibility to stand thousands of bending, achieves an efficiency of 3.75%, which is the highest for Sb 2 S 3 devices in substrate configuration. The presented flexible structure and back interfacial selenization study will provide new prospects for inorganic Sb 2 S 3 thin film solar cells.
研究领域:
光伏技术
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材料科学
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薄膜技术
·
柔性电子学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 2
·期 37
·15546-15552
·
IF 0
Yitan Li,Lin Wei,Cuncun Wu,Chang Liu,Yanxue Chen,Hong Liu,Jun Jiao,Liangmo Mei
Uniform zinc oxide (ZnO) nanosheet arrays were grown on woven titanium wires using a low temperature hydrothermal method. Photoanodes were prepared by depositing CdS and CdSe quantum dots onto the ZnO nanosheet arrays by a successive ionic layer adsorption and reaction (SILAR) method. Solar cells were assembled using these nanostructured photoanodes and their photovoltaic performance was characterized. The effect of using SILAR cycles for the deposition of quantum dots on the performance of these nanostructured solar cells was investigated systematically. The overall light-to-electricity conversion efficiency of 0.98% was achieved under 100 mW cm−2 illumination for flexible CdS/CdSe co-sensitized solar cells using conventional Pt foils as counter electrodes. To further improve the performance of the flexible solar cells, PbS and Cu2S counter electrodes based on Pb and Cu foils were fabricated. The best conversion efficiencies of flexible CdS/CdSe co-sensitized solar cells using Cu2S and PbS counter electrodes were 3.4% and 2.5%, which demonstrated a significant enhancement in values for short circuit current, open circuit voltage, and fill factor compared to those obtained with the commonly used Pt and Au electrodes.
研究领域:
材料科学
·
纳米科技
·
能源材料
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光电化学
·
半导体器件
✓ 已验证
DOI
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
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纳米技术
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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
危险品化学品经营许可证（带存储）