SYNTHETIC METALS
·
2022
·
IF 4
Xiaoliang Wang,Jingkun Wang,Zhongqiang Wang,Peng Dong,Min Zhao,Yuying Hao,Hua Wang
Abstact Two-dimensional (2D) transition metal dichalcogenides (TMDs) materials have been applied in organic solar cells (OSCs), which possess excellent light transmittance, good charge carrier selectivity and high mobility. Herein, high quality 2D material of tungsten disulfide (WS 2 ) nanosheets is synthesized by liquid exfoliation method, which is used to form a double-layer hole transport layer with soluble copper(I) thiocyanate (CuSCN). The introduction of WS 2 nanosheets smooth the surface of CuSCN hole transport layers (HTL) and modify the interface between CuSCN HTL and light absorber. The cells using double-layer CuSCN/WS 2 as HTL exhibit higher light photon utilization, weaker recombination loss compared to the reference cell with pristine CuSCN HTL. More importantly, it has been proved that the WS 2 nanosheets act as intermedium between light absorbers and CuSCN, which contribute to efficient hole extraction process. As a result, a champion power conversion efficiency (PCE) of 9.00% is obtained in PTB7-Th:PC 71 BM light absorber based cell using CuSCN/WS 2 as HTL, which is > 16% higher than the PCE of 7.75% achieved in reference cell with pristine CuSCN HTL. This result proves that 2D TMDs materials are promising candidates as charge selectivity for highly efficient solar cells.
研究领域:
材料科学
·
能源科学
·
光电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL RESEARCH
·
2016
·
IF 0.661
Haidong Liu,Bo Chen,Jin Cai,Junqing Chen,Min Ji
Eleven 1,3-diynes have been prepared by a highly efficient base-catalysed homocoupling of terminal alkynes mediated by a novel combination of CuSCN/4-nitrobenzenediazonium tetrafluoroborate.
研究领域:
有机化学
·
合成化学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jingkun Wang,Jidong Sun,Yuliang Liu,Xun Zhang,Kai Cheng,Yupeng Chen,Fangzhou Zhou,Jujie Luo,Tianbao Li,Junjie Guo,Bingshe Xu
Modification of oxygen evolution co-catalyst (OEC) on the surface of bismuth vanadate (BiVO 4 ) can effectively improve the kinetics of water oxidation, but it is still limited by the small hole extraction driving force at the BiVO 4 /OEC interface. Modulating the BiVO 4 /OEC interface with a hole transfer layer (HTL) is expected to facilitate hole transport from BiVO 4 to the OEC surface. Herein, a copper(I) thiocyanate (CuSCN) HTL is inserted between BiVO 4 and NiFeO x OEC to create BiVO 4 /CuSCN/NiFeO x photoanode, resulting in a significant enhancement of photoelectrochemical (PEC) water splitting performance. From electrochemical analyses and density functional theory (DFT) simulations, the markedly enhanced PEC performance is attributed to the insertion of CuSCN as an HTL, which promotes the extraction of holes from BiVO 4 surface and boosts the water oxidation kinetics. The optimal photoanode achieves a photocurrent density of 5.6 mA cm −2 at 1.23 V versus the reversible hydrogen electrode (vs. RHE) and an impressive charge separation efficiency of 96.2 %. This work offers valuable insights into the development of advanced photoanodes for solar energy conversion and emphasizes the importance of selecting an appropriate HTL to mitigate recombination at the BiVO 4 /OEC interface.
研究领域:
材料科学
·
能源转换
·
界面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Ziqi Tang,Disheng Yao,Ying Li,Chao Li,Tian Xia,Nan Tian,Jilin Wang,Guoyuan Zheng,Shuyi Mo,Fei Long,Bing Zhou
Cuprous thiocyanate (CuSCN) emerges as a prime candidate among inorganic hole-transport materials, particularly suitable for the fabrication of perovskite solar cells. Nonetheless, there is an Ohmic contact degradation between the perovskite and CuSCN layers. This is induced by polar solvents and undesired purities, which reduce device efficiency and operational stability. In this work, we introduce amidinothiourea (ASU) as an intermediate layer between perovskites and CuSCN to overcome the above obstacles. The characterization results confirm that ASU-modified perovskites have eliminated trap-induced defects by strong chemical bonding between –NH– and C═S from ASU and under-coordinated ions in perovskites. The interfacial engineering based on the ASU also reduces the potential barrier between the perovskite and CuSCN layers. The ASU-treated perovskite solar cells (PSC) with a gold electrode obtains an improved power conversion efficiency (PCE) from 16.36 to 18.03%. Furthermore, after being stored for 1800 h in ambient air (relative humidity (RH) = 45%), the related device without encapsulation maintains over 90% of its initial efficiency. The further combination of ASU and carbon-tape electrodes demonstrates its potential to fabricate low-cost but stable carbon-based PSCs. This work finds a universal approach for the fabrication of efficient and stable PSCs with different device structures.
研究领域:
材料科学
·
可再生能源
·
光伏技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Zhongqiang Wang,Zongtao Wang,Jian Guo,Jiale Dong,Yingjuan Zhou,Yanqin Miao,Bo Zhao,Yuying Hao,Hua Wang,Bingshe Xu,Shougen Yin
In this work, we report a solution processed hole extraction layer (HEL) for highly efficient organic solar cells (OSCs), which is formed by CuSCN and perylene . It shows that the introduction of perylene helps to polish the interface between HEL and active layers, leading to efficient charge transport and collection, diminished recombination loss , and thereby improving the photovoltaic performance . In poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2- b ; 4,5- b ′]dithiophene-2,6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4- b ]thiophene-)-2-carboxylate-2-6-diyl)]:[6,6]-phenyl C 71 -butyric acid methyl ester (PTB7-Th:PC 71 BM) based OSCs, over 9% enhancement of power conversion efficiency (PCE) is obtained in the cells using bilayer CuSCN/perylene as HEL compared with that of the reference cell using pure CuSCN as HEL. The advantage of bilayer CuSCN/perylene HEL is also confirmed in nonfullerene system. An improved PCE is also obtained after application of perylene in nonfullerene system based cell. Furthermore, superior air stability has been observed in CuSCN and CuSCN/perylene HEL based cells. The use of a bilayer CuSCN/perylene HEL proves a potential approach to obtain efficient and stable OSCs.
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
CRYSTENGCOMM
·
2018
·Vol. 21
·期 3
·554-562
·
IF 3.304
Junli Wang,Yajie Qiao,Tingting Wang,Hongsong Yu,Ying Feng,Junhao Zhang
Stibnite (Sb2S3) is a promising material in photoelectronic and energy devices, but it frequently exhibits sheaf-like and hierarchical-like structures that consist of secondary nanorods (NRs) or nanowires (NWs) because of its spatial fractal splitting growth habit. Foreign ions or seeds enable the alteration of the growth dynamics and the consequent shape engineering of nanocrystals. We here report that the introduction of trace amounts of isovalent Bi3+ ions (typically 1–2 atom% Bi/Sb) is efficient to synthesize highly disperse, uniform Sb2S3 NRs with reduced diameters and lengths. Two temperature-dependent growth mechanisms stemming from the presence of Bi ions, the full splitting growth at high temperature and the seeded growth at low temperature, are proposed to demonstrate the formation of separated, thinner NRs. Meanwhile, the surfactant removal and the coupling with p-type CuSCN are simultaneously performed on these Sb2S3 NRs, and the resultant CuSCN/Sb2S3 composite, which contains a large amount of point-to-surface contact p–n heterojunctions with a suitable band alignment, holds promise in self-powered UV-visible photodetectors via the photovoltaic effect.
研究领域:
材料科学
·
光电子学
·
纳米技术
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Junzhe Han,Weiting Liu,Wenwen Zheng,Xueqi Zhang,Guoyuan Zheng,Nan Tian,Jilin Wang,Yang Yang,Fei Long,Disheng Yao
Copper(I) thiocyanate (CuSCN) is a relatively inexpensive and stable p-type hole transport material suitable for fabricating perovskite solar cells (PSCs). However, devices using CuSCN often exhibit poor stability due to severe degradation at the CuSCN/metal-electrode interface, and the root cause remains unclear. In this study, we address this issue by constructing a modified hole transport layer (HTL) through the introduction of an ultra-thin interlayer of cobalt thiocyanate (Co(SCN) 2 ) between CuSCN and the Au electrode. This strategy not only reduces the surface roughness of the CuSCN film surface but also establishes favorable energy level alignment, thereby improving hole extraction efficiency. Additionally, it prevents the degradation of CuSCN caused by the self-disproportionation reaction of Cu + in CuSCN (Cu + = Cu 0 + Cu 2+ ) through the alloying of Cu/Au. Consequently, the PSC fabricated with the CuSCN/Co(SCN) 2 -layer achieves an impressive power conversion efficiency (PCE) of 19.38%, making it one of the highest efficiencies among dopant-free inorganic HTL-based PSCs. Importantly, the device with Co(SCN) 2 demonstrates overall enhancements in operational stability under continuous light illumination, moisture attack and thermal stress. This work finds a dual-interface passivation for making efficient and stable CuSCN-based PSCs with different device structures, which has a certain contribution to the surface & interface engineering of CuSCN-based PSCs.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Yanling Wang,JunKun Wang,Wentao Qu,Jiehui Liang,Shaohua Xie,Xiangrong Li,Wenliang Wang,Guoqiang Li
GaAs/PEDOT:PSS exhibits excellent optoelectronic properties and a matched energy band structure, showing great potential for PEC water splitting. However, the insulating PSS causes severe conductivity loss and low charge separation efficiency in the composite. Herein, n-propanol, 1,2-propanediol, and glycerol are used to modify PEDOT:PSS, with their –OH groups forming electrostatic interactions with PSS’s –SO3H to weaken the PEDOT-PSS Coulombic force and promote PSS dissociation. XPS, FTIR, and AFM characterizations confirm that glycerol achieves the optimal PSS dissociation by forming a multi-dentate hydrogen bond network, which also optimizes PEDOT’s conjugated system for enhanced light absorption. GaAs/glycerol@PEDOT:PSS delivers a photocurrent density of 17.8 mA/cm2 at 1.23 V vs RHE (78% higher than GaAs/PEDOT:PSS) with an ABPE of 12.65% at 0.36 V vs RHE. Introducing CuSCN as a hole transport layer further reduces the electrode impedance and forms a stepped energy band with GaAs and PEDOT:PSS for directional hole transport. The resultant GaAs/CuSCN/glycerol@PEDOT:PSS exhibits a photocurrent density of 20.8 mA/cm2 at 1.23 V vs RHE, an ABPE of 13.75%, a high H2 evolution rate of 138.6 μmol/h, and a Faradaic efficiency of 97.74%. This work provides an effective interfacial engineering strategy for the rational design of high-performance GaAs-based PEC electrodes for water splitting.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 16
·9665-9672
·
IF 10.733
Kanghua Li,Siyu Wang,Chao Chen,Rokas Kondrotas,Manchen Hu,Shuaicheng Lu,Chong Wang,Wei Chen,Jiang Tang
Sb2Se3 is a promising non-toxic, Earth-abundant, stable thin-film solar cell absorber material. However, the low built-in potential caused by the low intrinsic doping density (∼1013 cm−3) and the low carrier collection efficiency due to the low carrier mobility (∼1.5 cm2 V−1 s−1) hinder further efficiency improvement of Sb2Se3 solar cells. Therefore, an effective hole-transport layer (HTL) is necessary to further boost the built-in potential and assist carrier collection. Herein we attempt to improve the efficiency of Sb2Se3 solar cells by using CuSCN as an HTL. CuSCN as an HTL suppresses the back surface recombination, and enhances the built-in potential and carrier collection efficiency. Meanwhile, materials and physical properties characterization reveals that CuSCN provides Cu ions which induce grain boundary inversion, and therefore separate photo-generated carriers more efficiently. Consequently, we obtained a device efficiency of 7.50%.
研究领域:
光伏技术
·
材料科学
·
半导体器件
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 45
·21382-21388
·
IF 3.591
Zhen He,Fanning Meng,Lianjie Li,Liguo Gao,Tingli Ma
Due to the low cost and strong hydrophobicity of carbon electrodes, carbon-based perovskite solar cells (C-PSCs) have drawn much attention. Copper(I) thiocyanate (CuSCN) is a favorable hole transport layer in perovskite solar cells (PSCs) because of its high chemical stability, high conductivity, and high hole mobility, but pinholes often appear during CuSCN film fabrication. In this work, organic ammonium salt, phenethylammonium iodide (PEAI), has been applied to modify the CuSCN film. The results indicated that PEAI not only eliminated the pinholes, but also passivated the perovskite film and enhanced the interfacial connection. Therefore, the power conversion efficiency (PCE) of C-PSCs increased by about 11%. The stability test showed that the C-PSCs, without any encapsulation, could maintain 70% of the initial efficiency after storage for 800 h in ambient air with 60%–70% relative humidity at room temperature.
研究领域:
材料科学
·
能源技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 18
·3121
·
IF 5.719
Zhangwei He,Runnan Yu,Wanrong Song,Yongshuai Gong,Hui Li,Zhan’ao Tan
Bismuth triiodide (BiI3) is a particularly promising absorber material for inorganic thin-film solar cells due to its merits of nontoxicity and low cost. However, one key factor that limits the efficiency of BiI3solar cells is the film morphology, which is strongly correlated with the trap states of the BiI3film. Herein, we report a coordination engineering strategy by using Lewis base dimethyl sulfoxide (DMSO) to induce the formation of a stable BiI3(DMSO)2complex for controlling the morphology of BiI3films. Density functional theory calculations further provide a theoretical framework for understanding the interaction of the BiI3(DMSO)2complex with BiI3. The obtained BiI3(DMSO)2complex could assist the fabrication of highly uniform and pinhole-free films with preferred crystallographic orientation. This high-quality film enables reduced trap densities, a suppressed charge recombination, and improved carrier mobility. In addition, the use of copper(I) thiocyanate (CuSCN) as a hole transport layer improves the charge transport, enabling the realization of solar cells with a record power conversion efficiency of 1.80% and a champion fill factor of 51.5%. Our work deepens the insights into controlling the morphology of BiI3thin films through the coordination engineering strategy and paves the way toward further improving the photovoltaic performances of BiI3solar cells.
研究领域:
材料科学
·
光伏技术
·
理论计算
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 37
·20225-20233
·
IF 11.9
Pengjie Hang,Chenxia Kan,Ge Li,Jiangsheng Xie,Biao Li,Yuxin Yao,Degong Ding,Zechen Hu,Deren Yang,Xuegong Yu
Copper(I) thiocyanate (CuSCN) is an extremely cheap and intrinsically stable p-type hole transport material which is attractive for solar cell applications. However, its devices exhibit poor stability due to the severe degradation at the CuSCN/metal-electrode interface and the origin is still unclear. Herein, the underlying degradation mechanism at CuSCN/metal (including Au, Ag and Al) interfaces is well unveiled, and metal electrodes induce the self-disproportionation reaction of Cu+ in CuSCN (Cu+ = Cu0 + Cu2+) through the alloying of Cu/metal, contributing to the interfacial degradation. This process in devices is spontaneous and sharply accelerated under the electric field, namely actual operation state. Thus, the metal electrode was replaced by a chemically stable carbon electrode to overcome the interface degradation, enabling efficient and stable n–i–p perovskite solar cells. Our finding uncovers the secret of degradation at the CuSCN/metal-electrode interface and provides an insight into the potential application of CuSCN in photoelectric devices, especially in solar cells.
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
危险品化学品经营许可证（带存储）