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Analysis of the double-layer α-Si:H emitter with different doping concentrations for α-Si:H/c-Si heterojunctionsolar cells

Haibin HUANG,Gangyu TIAN,Tao WANG,Chao GAO,Jiren YUAN,Zhihao YUE,Lang ZHOU

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 92-95 doi: 10.1007/s11708-016-0432-8

Abstract: doping concentrations (DLE) have been designed and prepared for amorphous silicon/crystalline silicon (α-Si:H/c-Si) heterojunction solar cells.

Keywords： double-layer emitter     α-Si:H/c-Si heterojunction solar cell     short circuit current     quantum efficiency     current-voltage-temperature    

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Plasma enhanced chemical vapor deposition of excellent a-Si:H passivation layers for a-Si:H/c-Si heterojunctionsolar cells at high pressure and high power

Lei ZHAO,Wenbin ZHANG,Jingwei CHEN,Hongwei DIAO,Qi WANG,Wenjing WANG

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 85-91 doi: 10.1007/s11708-016-0437-3

Abstract: The intrinsic a-Si:H passivation layer inserted between the doped a-Si:H layer and the c-Si substrateis very crucial for improving the performance of the a-Si:H/c-Si heterojunction (SHJ) solar cell.In this paper, intrinsic a-Si:H layers were prepared on n-type Cz c-Si substrates by 27.12 MHz PECVDThe corresponding passivation performance on c-Si was investigated by minority carrier lifetime measurementmm pseudo-square n-type Cz c-Si substrate with the open-circuit voltage ( ) of up to 0.732 V.

Keywords： PECVD     high pressure and high power     a-Si:H microstructure     passivation     heterojunction solar cell    

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High-quality industrial n-type silicon wafers with an efficiency of over 23% for Si heterojunction solar

Fanying MENG,Jinning LIU,Leilei SHEN,Jianhua SHI,Anjun HAN,Liping ZHANG,Yucheng LIU,Jian YU,Junkai ZHANG,Rui ZHOU,Zhengxin LIU

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 78-84 doi: 10.1007/s11708-016-0435-5

Abstract: contamination can offer one of the best Si-based solar cells.In this study, Si heterojuction (SHJ) solar cells which was fabricated with different wafers in the topFurthermore, the dependence of SHJ solar cell open-circuit voltage on the surface topography was discussedMoreover, the simulation revealed that the highest efficiency of the SHJ solar cell could be achievedFortunately, over 23% of the conversion efficiency of the SHJ solar cell with a wafer thickness of 100

Keywords： n-type Cz-Si     thinner wafer     surface texture     high efficiency     SHJ solar cell    

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An industrial solution to light-induced degradation of crystalline silicon solar cells

Meng XIE,Changrui REN,Liming FU,Xiaodong QIU,Xuegong YU,Deren YANG

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 67-71 doi: 10.1007/s11708-016-0430-x

Abstract: Boron-oxygen defects can cause serious light-induced degradation (LID) of commercial solar cells basedon the boron-doped crystalline silicon (c-Si), which are formed under the injection of excess carrierscells and passivated emitter and rear contact (PERC) solar cells.Both kinds of the treated solar cells show high stability in efficiency and suffer from very little LIDThis technology is of significance for the suppression of LID of c-Si solar cells for the industrial

Keywords： Boron-oxygen defects     c-Si solar cells     light-induced degradation     passivation     forward bias    

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Ultrathin microcrystalline hydrogenated Si/Ge alloyed tandem solar cells towards full solar spectrum

Yu Cao, Xinyun Zhu, Xingyu Tong, Jing Zhou, Jian Ni, Jianjun Zhang, Jinbo Pang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 997-1005 doi: 10.1007/s11705-019-1906-0

Abstract: Among them, micro-crystalline Si and Ge based thin film solar cells have advantages of high efficiencyIn this work, we designed and simulated a multi-junction solar cell with its four sub-cells selectivelythe record efficiency of 24.80% has been realized with the typical quadruple junction structure of a-Si:H/a-Si Ge :H/µc-Si:H/µc-Si Ge :H.efficiency and ultrathin multi-junction solar cells.

Keywords： thin films     solar cells     quadruple junction solar cell     amorphous silicon     silicon germanium alloy     quantum    

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POCl3 diffusion for industrial Si solar cell emitter formation

Hongzhao LI,Kyung KIM,Brett HALLAM,Bram HOEX,Stuart WENHAM,Malcolm ABBOTT

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 42-51 doi: 10.1007/s11708-016-0433-7

Abstract: POCl diffusion is currently the standard method for industrial n-type emitter fabrication. In this study, we present the impact of the following processing parameters on emitter formation and electrical performance: deposition gas flow ratio, drive-in temperature and duration, drive-in O flow rate, and thermal oxidation temperature. By showing their influence on the emitter doping profile and recombination activity, we provide an overall strategy for improving industrial POCl tube diffused emitters.

Keywords： POCl3 diffusion     emitter recombination     oxidation     silicon    

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SiO2 passivation layer grown by liquid phase deposition for silicon solar cell application

Yanlin CHEN,Sihua ZHONG,Miao TAN,Wenzhong SHEN

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 52-59 doi: 10.1007/s11708-016-0429-3

Abstract: Surface passivation is one of the primary requirements for high efficient silicon solar cells.By utilizing the LPD SiO film as surface passivation layer, a 19.5%-efficient silicon solar cell on

Keywords： Si solar cell     passivation     SiO2     liquid phase deposition     carrier lifetime    

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Influence of using amorphous silicon stack as front heterojunction structure on performance of interdigitatedback contact-heterojunction solar cell (IBC-HJ)

Rui JIA,Ke TAO,Qiang LI,Xiaowan DAI,Hengchao SUN,Yun SUN,Zhi JIN,Xinyu LIU

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 96-104 doi: 10.1007/s11708-016-0434-6

Abstract: Interdigitated back contact-heterojunction (IBC-HJ) solar cells can have a conversion efficiency of overthe front surface passivation and structure have a great influence on the properties of the IBC-HJ solarcell.) layers on the front surface of IBC-HJ solar cells.Without FSF, the IBC-HJ solar cells may become more sensitive to interface defect density.

Keywords： amorphous silicon     front surface field     simulations     interdigitated back contact-heterojunction solar cells    

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Ga(X)N/Si nanoarchitecture: An emerging semiconductor platform for sunlight-powered water splitting toward

Frontiers in Energy doi: 10.1007/s11708-023-0881-9

Abstract: Sunlight-powered water splitting presents a promising strategy for converting intermittent and virtually unlimited solarAmong various materials developed, Ga(X)N/Si (X = In, Ge, Mg, etc.) nanoarchitecture has emerged as apaper introduces the characteristics, properties, and growth/synthesis/fabrication methods of Ga(X)N/Sithe challenges and prospects of artificial photosynthesis integrated device and system using Ga(X)N/Sinanoarchitectures for solar water splitting toward hydrogen.

Keywords： Ga(X)N/Si nanoarchitecture     artificial photosynthesis     water splitting     solar toward hydrogen    

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Combustion characteristics of SI engine fueled with methanol-gasoline blends during cold start

SONG Ruizhi, LIU Shenghua, LIANG Xiaoqiang, Tiegang H U

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 395-400 doi: 10.1007/s11708-008-0081-7

Abstract: The results at 5°C show that unburned hydrocarbon (UHC) and carbon monoxide (CO) decrease remarkably.The exhaust gas temperature is about 140°C higher at 200 s after operation compared with that of gasoline

Keywords： combustion     3-cylinder     indicated     Cylinder pressure     emission    

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Achieving 12.0% Solar-to-Hydrogen Efficiency with a Trimetallic-Layer-Protected and Catalyzed SiliconPhotoanode Coupled with an Inexpensive Silicon Solar Cell Article

Lingyun He, Xin Hong, Yiqing Wang, Zhonghang Xing, Jiafeng Geng, Penghui Guo, Jinzhan Su, Shaohua Shen

Engineering 2023, Volume 25, Issue 6,   Pages 128-137 doi: 10.1016/j.eng.2022.03.023

Abstract: ; text-align:justify">n-Type silicon (n-Sitrimetallic Ni0.9Fe0.05Co0.05 protective layer is successfully electrodeposited on a p+n-Siphotoanode to an inexpensive Si solar cell, an integrated photovoltaic/PEC (PV/PEC) device achieveda solar-to-hydrogen conversion efficiency of as high as 12.0% without bias.relationship, which exhibits great potential for the integration of low-cost PV/PEC devices for unassisted solar-driven

Keywords： n-Type Si     Photoanode     Water splitting     Photovoltaic/photoelectrochemical device    

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Stability and dynamics of rotor system with 45° slant crack on shaft

Yanli LIN, Xiaohui SI, Fulei CHU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 203-213 doi: 10.1007/s11465-011-0131-4

Abstract:

Crack on a shaft is one of the common damages in a rotor system. In this paper, transverse vibrations are calculated to compare the influences of transverse crack and slant crack on the rotor system. Results show that the vibration amplitude of the rotor system with a 45° slant crack on the shaft is larger than that with a transverse crack when the two types of crack have the same depth and the rotor system runs in the same condition. Stability and dynamic characteristics of the rotor system with a 45° slant crack on the shaft under torsional excitation are analyzed by considering opening and closing of the crack. It is shown that the instability of the transverse vibration of the rotor system increases with increasing difference between the bending stiffness in two main directions, and the vibration is stable when the two bending stiffness are identical. The spectrum analysis of the steady-state response reveals that the gravity and the eccentricity produce different frequency components, and when the two bending stiffness are identical, the multiple frequency components of the torsional excitation disappear. Further investigation shows that the vibration amplitudes in combined frequencies increase rapidly in transversal, torsional, and axial vibration with increasing slant crack depth. The results are helpful for the understanding the dynamic behavior of a rotor system with a slant crack on a shaft and can be used for the detection of the slant crack on a shaft.

Keywords： rotor dynamics     slant crack     stability     torsional excitation     open and close    

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Mercury enrichment in

Chunhao Dai, Pufeng Qin, Zhangwei Wang, Jian Chen, Xianshan Zhang, Si Luo

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 1, doi: 10.1007/s11783-017-0892-z

Abstract: Mercury enrichment in response to elevated atmospheric mercury concentrations in the organs of rape ( ) was investigated. Elevated soil mercury content had significant impact on mercury accumulation in rape stems, roots, seeds and seed coats. Leaf mercury in the leaves was mostly affected by atmospheric input while the stems were mostly affected by soil concentrations. Mercury in the aboveground plant tissue mainly derived from atmospheric absorption, and atmospheric mercury absorption in leaves was higher than that in the stems. Mercury enrichment in response to elevated atmospheric mercury concentrations in the organs of rape ( ) was investigated using an open top chamber fumigation experiment and a soil mercury enriched cultivation experiment. Results indicate that the mercury concentration in leaves and stems showed a significant variation under different concentrations of mercury in atmospheric and soil experiments while the concentration of mercury in roots, seeds and seed coats showed no significant variation under different atmospheric mercury concentrations. Using the function relation established by the experiment, results for atmospheric mercury sources in rape field biomass showed that atmospheric sources accounted for at least 81.81% of mercury in rape leaves and 32.29% of mercury in the stems. Therefore, mercury in the aboveground biomass predominantly derives from the absorption of atmospheric mercury.

Keywords： Open top chamber     Gaseous elemental mercury (GEM)     Soil Mercury     Brassica napus    

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Laser ablation of block copolymers with hydrogen-bonded azobenzene derivatives

Jintang Huang, Youju Huang, Si Wu

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 450-456 doi: 10.1007/s11705-018-1735-6

Abstract: In PS-b-P4VP(AzoR) with different substituents (R= CN, H, and CH3), ablation thresholds follow

Keywords： laser ablation     block copolymers     hydrogen-bond     azobenzene derivatives     supramolecular assembly    

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Numerical simulation of charge stratifications to improve combustion and NO formation of lean-burn SI

Zhijun PENG ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 353-358 doi: 10.1007/s11708-009-0035-8

Abstract: The influences of charge stratification on spark ignition (SI) engine combustion and NO emission were

Keywords： charge stratification     SI engine     lean-burn combustion     NO emission    

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Title Author Date Type Operation

Analysis of the double-layer α-Si:H emitter with different doping concentrations for α-Si:H/c-Si heterojunctionsolar cells

Haibin HUANG,Gangyu TIAN,Tao WANG,Chao GAO,Jiren YUAN,Zhihao YUE,Lang ZHOU

Journal Article

Plasma enhanced chemical vapor deposition of excellent a-Si:H passivation layers for a-Si:H/c-Si heterojunctionsolar cells at high pressure and high power

Lei ZHAO,Wenbin ZHANG,Jingwei CHEN,Hongwei DIAO,Qi WANG,Wenjing WANG

Journal Article

High-quality industrial n-type silicon wafers with an efficiency of over 23% for Si heterojunction solar

Fanying MENG,Jinning LIU,Leilei SHEN,Jianhua SHI,Anjun HAN,Liping ZHANG,Yucheng LIU,Jian YU,Junkai ZHANG,Rui ZHOU,Zhengxin LIU

Journal Article

An industrial solution to light-induced degradation of crystalline silicon solar cells

Meng XIE,Changrui REN,Liming FU,Xiaodong QIU,Xuegong YU,Deren YANG

Journal Article

Ultrathin microcrystalline hydrogenated Si/Ge alloyed tandem solar cells towards full solar spectrum

Yu Cao, Xinyun Zhu, Xingyu Tong, Jing Zhou, Jian Ni, Jianjun Zhang, Jinbo Pang

Journal Article

POCl3 diffusion for industrial Si solar cell emitter formation

Hongzhao LI,Kyung KIM,Brett HALLAM,Bram HOEX,Stuart WENHAM,Malcolm ABBOTT

Journal Article

SiO2 passivation layer grown by liquid phase deposition for silicon solar cell application

Yanlin CHEN,Sihua ZHONG,Miao TAN,Wenzhong SHEN

Journal Article

Influence of using amorphous silicon stack as front heterojunction structure on performance of interdigitatedback contact-heterojunction solar cell (IBC-HJ)

Rui JIA,Ke TAO,Qiang LI,Xiaowan DAI,Hengchao SUN,Yun SUN,Zhi JIN,Xinyu LIU

Journal Article

Ga(X)N/Si nanoarchitecture: An emerging semiconductor platform for sunlight-powered water splitting toward

Journal Article

Combustion characteristics of SI engine fueled with methanol-gasoline blends during cold start

SONG Ruizhi, LIU Shenghua, LIANG Xiaoqiang, Tiegang H U

Journal Article

Achieving 12.0% Solar-to-Hydrogen Efficiency with a Trimetallic-Layer-Protected and Catalyzed SiliconPhotoanode Coupled with an Inexpensive Silicon Solar Cell

Lingyun He, Xin Hong, Yiqing Wang, Zhonghang Xing, Jiafeng Geng, Penghui Guo, Jinzhan Su, Shaohua Shen

Journal Article

Stability and dynamics of rotor system with 45° slant crack on shaft

Yanli LIN, Xiaohui SI, Fulei CHU

Journal Article

Mercury enrichment in

Chunhao Dai, Pufeng Qin, Zhangwei Wang, Jian Chen, Xianshan Zhang, Si Luo

Journal Article

Laser ablation of block copolymers with hydrogen-bonded azobenzene derivatives

Jintang Huang, Youju Huang, Si Wu

Journal Article

Numerical simulation of charge stratifications to improve combustion and NO formation of lean-burn SI

Zhijun PENG ,

Journal Article