Solar RRL
·
2025
·Vol. 9
·期 7
·2400901
·
IF 4.7
Zhengjie Xu,Jianing Wang,Qiang Lou,Yufeng Jin,Hong Meng,Hang Zhou
Poly(3-hexylthiophene) (P3HT) has attracted significant interest due to its cost-effective synthesis, high purity, and stable film properties. However, the efficiency of perovskite solar cells is limited by energy-level mismatches and nonradiative recombination at the P3HT/perovskite interface. In this study, we introduce the 2,7-dimetapyridinebenzo[4,5]thieno[3,2-b]benzofuran (Mpy-BTBF) small molecule, which features extended π -conjugation and lone pair electrons from oxygen and sulfur atoms. Incorporating Mpy-BTBF into P3HT (M-P3HT) improves charge transport and passivates iodine-related defects, achieving a power conversion efficiency (PCE) of 16.36%, surpassing the pristine P3HT-based device (14.49%). With further Li salts doping, the champion PCE increased to 21.24 from 17.30%. Finally, M-P3HT-based devices maintained over 70% of their efficiency after 600 h of aging at 60% relative humidity and 60°C.
研究领域:
材料科学
·
光伏技术
·
有机电子学
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2015
·Vol. 5
·期 1
·1-7
·
IF 5.578
Hao Qi,Wang Chenxi,Huang Hao,Li Wan,Du Deyang,Han Di,Qiu Teng,Chu Paul K.
The effectiveness of photocatalytic processes is dictated largely by plasmonic materials with the capability to enhance light absorption as well as the energy conversion efficiency. Herein, we demonstrate how to improve the plasmonic photocatalytic properties of TiO 2 /Al nano-void arrays by overlapping the localized surface plasmon resonance (LSPR) modes with the TiO 2 band gap. The plasmonic TiO 2 /Al arrays exhibit superior photocatalytic activity boasting an enhancement of 7.2 folds. The underlying mechanisms concerning the radiative energy transfer and interface energy transfer processes are discussed. Both processes occur at the TiO 2 /Al interface and their contributions to photocatalysis are evaluated. The results are important to the optimization of aluminum plasmonic materials in photocatalytic applications.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Abdul Basit,Tanveer Hussain,Xin Li,Jiwu Xin,Bin Zhang,Xiaoyuan Zhou,Guoyu Wang,Ji-Yan Dai
Being a major obstacle, Ag2Te has always been restricted in p-type AgSbTe2-based materials to improve their thermoelectric performance. This work reveals a stabilized AgSbTe2 through Sn/Ge alloying as synthesized by melting, annealing, and hot press. Interestingly, addition of Sn/Ge in AgSbTe2 extended the solubility limit up to ∼30% and hence suppressed Ag2Te in Ag(1–x)SnxSb(1–y)GeyTe2 compounds and led to enhanced electrical transport. Moreover, electrical and thermal transport properties of AgSbTe2 have been greatly affected by the phase transition of Ag2Te near 425 K. However, high-entropy Ag0.85Sn0.15Sb0.85Ge0.15Te2 compound results in a stabilized rock-salt structure and presents a high power factor of ∼10.8 μW cm–1 K–2 at 757 K. Besides, density functional theory reveals that available multivalence bands in Sn/Ge-doped AgSbTe2 lead to reduction in energy offsets. Meanwhile, a variety of defects appear in the Ag0.85Sn0.15Sb0.85Ge0.15Te2 sample due to entropy change, and thus lattice thermal conductivity decreases. Ultimately, a high figure of merit of ∼1.5 is attained at 757 K. This work demonstrates a roadmap for other group IV–VI materials so that the high-entropy approach may inhibit the impurity phases with extended solubility limit and result in high thermoelectric performance.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2014
·
IF 10.211
Lingling Zhang,Lu Bai,Miao Xu,Lei Han,Shaojun Dong
A membrane-less ethanol/air biofuel cell (BFC) with both the anode and cathode driven by visible light has been assembled. Simply upon a light source illumination, the BFC generates the maximum power density of 0.27 mW cm −2 with an open circuit voltage of 1.13 V, realizing the dual route energy conversion of light energy and chemical energy to electricity, improving the energy utilization efficiency.
研究领域:
生物化学
·
能源科学
✓ 已验证
DOI
高影响因子
Nano Research
·
2018
·Vol. 11
·期 3
·1379-1388
·
IF 7.994
Liu Xiao-Yuan,Zhang Guozhen,Chen Hao,Li Haowen,Jiang Jun,Long Yi-Tao,Ning Zhijun
The development of photocatalysts that can effectively harvest visible light is essential for advances in high-efficiency solar-driven hydrogen generation. Herein, we synthesized water soluble CuInS 2 (CIS) and Cu-In-Zn-S (CIZS) quantum dots (QDs) by using one-pot aqueous method. The CIZS QDs are well passivated by glutathione ligands and are highly stable in aqueous conditions. We subsequently applied these QDs as a light harvesting material for photocatalytic hydrogen generation. Unlike most small band gap materials that show extremely low efficiency, these new QDs display remarkable energy conversion efficiency in the visible and near-infrared regions. The external quantum efficiency at 650 nm is ∼1.5%, which, to the best of our knowledge, is the highest value achieved until now in the near-infrared region.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
SUPERLATTICES AND MICROSTRUCTURES
·
2016
·
IF 2.117
Fangmin Yan,Lianfeng Duan,Qiqian Gao,Jiao Men,Shihan Sun,Xueyu Zhang,Wei Lü
In spite of the great development in quantum dot sensitized solar cells (QDSSCs), enrichment of material system of QDSSCs is still imperial mission for further advances. In this report, two-dimensional graphitic carbon nitride (g-C 3 N 4 ) prepared from urea was applied to modify porous TiO 2 photoanodes , followed by the deposition of CdS and CdSe QDs as sensitizers. In the as-prepared photoanodes, g-C 3 N 4 functioned as barrier for retarding electron backward recombination and assisted to strengthen light absorption . Compared with the pure TiO 2 photoanode, the photoelectrical behaviors of g-C 3 N 4 modified TiO 2 photoanode were obviously improved. By optimizing the loading amount of g-C 3 N 4 , the champion performance was achieved at 15% addition amount of g-C 3 N 4 with shortcircuit current density of 15.1 mA cm −2 , open circuit voltage of 0.56 V, and energy conversion efficiency of 4.14% under AM 1.5 illumination. The improvement in cell performance was attributed to the type II alignment between g-C 3 N 4 and TiO 2 , which induced the fast separation of photogenerated carriers. The transfer of the photogenerated electrons and holes is driven by the conduction band offset of 0.39 eV and the valence band offset of 0.86 eV, respectively. Present results provided a new insight for further optimum photoanode structures of QDSSCs.
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
ORGANIC ELECTRONICS
·
2019
·
IF 3.495
Caixia Ren,Yue He,Shiqi Li,Qinjun Sun,Yifan Liu,Yukun Wu,Yanxia Cui,Zhanfeng Li,Hua Wang,Yuying Hao,Yucheng Wu
Organic-inorganic hybrid perovskite solar cells (PSCs) have attracted tremendous attention recently because of their excellent photovoltaic performance . High power conversion efficiency (PCE) and long-term stability of PSCs mainly rely on high crystalline quality of perovskite film, good interface contact between functional layers and matching energy level alignment, which can be achieved by crystal growth regulation and interface engineering. Here, we demonstrate a high-performance planar heterojunction PSCs with PCBM/N2200 as double electron transport layers (ETLs). The N2200-based PSCs exhibit an average PCE of 15.50%, which obviously surpass the average PCE of 14.18% of conventional PSCs with only PCBM as ETLs. In comparison with the conventional PSCs, the PCBM/N2200 double ETLs increase built-in potential of devices and decrease interfacial energy barrier of MAPbI 3 /PCBM and then result in higher V oc . Moreover, non-fullerene material N2200 can efficiently inhibit the aggregation of PC 61 BM, promote perovskite surface grain growth and passivate perovskite interface defect. All these are beneficial for electron transfer and extraction, and thereby increase the short-circuit current ( J sc ) and the Fill Factor (FF) of N2200 PSCs. In addition, N2200 obviously improve the air- and illumination-stability of PSCs. These results could stem from the interaction between PbI 2 as Lewis acid and N2200 as Lewis base. This work indicate that N2200/PC 61 BM as double ETL is an effective way to get high photovoltaic performance for the inverted planar heterojunction PSCs.
研究领域:
材料科学
·
光伏技术
✓ 已验证
产品关联
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
·
光伏技术
·
能源工程
✓ 已验证
DOI
PubMed
高影响因子
Polymers
·
2018
·Vol. 10
·期 3
·331
·
IF 2.935
Xunchang Wang,Chang Cheng,Yuda Li,Feng Wang
Two new low bandgap conjugated polymers, PBDTS-ID and PBDTS-DTNT, containing isoindigo (ID) and naphtho[1,2-c:5,6-c′]bis[1,2,5]thiadiazole (NT), respectively, as an electron-deficient unit and alkylthiothienyl-substituted benzodithiophene (BDTS) as an electron-rich unit, were designed and synthesized by palladium-catalyzed Stille polycondensation. Both polymers showed good thermal stability up to 330 °C and broad absorption ranging from 300 to 842 nm. Electrochemical measurement revealed that PBDTS-ID and PBDTS-DTNT exhibited relatively low-lying highest occupied molecular orbital energy levels at −5.40 and −5.24 eV, respectively. These features might be beneficial for obtaining reasonable high open-circuit voltage and high short-circuit current. Polymer solar cells (PSCs) were fabricated with an inverted structure of indium-tin oxide/poly(ethylenimine ethoxylate)/polymer:PC71BM/MoO3/Ag. As a preliminary result, the PSCs based on PBDTS-ID and PBDTS-DTNT exhibited moderate power conversion efficiencies of 2.70% and 2.71%, respectively.Keywords:conjugated polymers;polymer solar cells;inverted structure;power conversion efficiency
研究领域:
材料科学
·
光电化学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Ran Yin,Ke-Xiang Wang,Shuang Cui,Bing-Bing Fan,Jing-Wen Liu,Yu-Kun Gao,Ting-Ting You,Peng-Gang Yin
The interface closely related to carrier transport plays a vital role in high-performance perovskite solar cells (PSCs). In this work, an ionic liquid (IL) 1-butyl-3-methylimidazole hexafluorophosphate (BMIMPF6) has been introduced to simultaneously modify the TiO2 and perovskite films, which improves the energy level matching and contact of the TiO2/CsPbI2Br interface as well as provides perovskite films with larger grain size, leading to more faster charge transfer and lower energy loss. Furthermore, the BMIMPF6 modifier passivates the perovskite film defects and reduces defect-induced charge trapping and recombination in CsPbI2Br PSCs. Under dual-interface modification, the open-circuit voltage of the modified device increased to 1.22 V, and the power conversion efficiency (PCE) increased from 10.65 to 13.19%. Moreover, the unencapsulated modified devices exhibit an enhanced stability and maintain 91% of their initial PCE after 60 days of storage. This work has provided a strategy for efficient and stable PSCs by exploiting an IL to optimize the dual-interface at the same time.
研究领域:
材料科学
·
能源技术
·
光电转换
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Liuxue Sun,Jihuai Wu,Weichun Pan,Lina Tan,Xia Chen,Chunyan Deng,Qi Chen,Yu Lin,Miaoliang Huang,Zhang Lan
With the development of the Internet of Things and wearable devices, flexible photocapacitors capable of both energy harvesting and storage have attracted significant attention. However, issues such as low overall conversion efficiency, poor stability, and low energy density in flexible devices urgently need to be addressed. In this work, a self-charging photocapacitor is designed by integrating a flexible quasi-solid-state supercapacitor with two silicon solar cells connected in series, and the matching conditions between photovoltaic conversion unit and energy storage unit are optimized. The best-performing photocapacitor achieve a coupling efficiency of 95.84 %, a Joule efficiency of 76.90 %, and an overall conversion efficiency of 13.44 %, with a high specific capacitance (149.29 mF∙cm −2 ) and an excellent energy density (19.31 μWh∙cm −2 ), along with great stability in photo-charging/dark-discharge cycles. This study provides new insights for the current research on flexible self-powered systems.
研究领域:
能源材料
·
光电化学
·
储能技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2024
·
IF 14.3
Zhuan Fu,Dandan Zhong,Sijie Zhou,Leyan Zhang,Weihao Long,Jiajing Zhang,Xinyu Wang,Jiahao Xu,Jieyao Qin,Junyao Gong,Li Li,Liangjun Xia,Bin Yu,Weilin Xu
The integration of solar interfacial evaporation and power generation offers a sustainable solution to address water and electricity scarcity. Although water-power cogeneration schemes are proposed, the existing schemes lack scalability, flexibility, convenience, and stability. These limitations severely limit their future industrial applications. In this study, we prepared a hybrid fabric composed of basalt fibers and cotton yarns with asymmetric structure using textile weaving technology. The cotton yarn in lower layer of fabric facilitates water transport, while the basalt fibers in upper layer enable thermal localization and water supply balancing. The carbon black is deposited on top layer by flame burning to facilitate photothermal conversion. The fabric exhibits a high evaporation rate of 1.52 kg m −2 h −1 , which is 3.6 times that of pure water, and an efficiency of 88.06% under 1 kW m −2 light intensity. After assembly with a thermoelectric module, the hybrid system achieves a maximum output power density of 66.73 mW m −2 . By exploiting the scalability of fabric, large-scale desalination and power production can be achieved in outdoor environments. This study demonstrates the seamless integration of fabric-based solar evaporation and waste heat-to-energy technologies, thereby providing new avenues for the development of scalable and stable water-power cogeneration systems.
研究领域:
材料科学
·
能源工程
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）