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Hybridized triboelectric-electromagnetic nanogenerators and Solar cell for energy harvesting and wireless power transmission

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Nano Research 2022年第3期15卷 2069-2076页

作者： Yandong Chen Yang Jie Jiaqing Zhu Qixin Lu Yu Cheng Xia Cao Zhong Lin Wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 100083China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Research Center for Bioengineering and Sensing Technology Beijing Key Laboratory for Bioengineering and Sensing TechnologySchool of Chemistry and Biological EngineeringBeijing Municipal Key Laboratory of New Energy Materials and Technologiesand Center for Green InnovationSchool of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing 100083China Center on Nanoenergy Research School of Physical Science and Technology Guangxi UniversityNanning 530004China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA30332-0245USA

Energy harvesting and power transmission is a signiﬁcant challenge for the self-powered technologies towards mobile electronic devices.Here,we propose a hybridized energy harvester to complement each other's strengths for simultaneously scavenging multiple types of energy and then wirelessly transmit the power.The harvester consists of electromagnetic-triboelectric nanogenerator units for collecting rotational energy and a commercial water-proof flexible Solar cell.At a rotation rate of 500 rpm,the output current of electromagnetic-triboelectric nanogenerator units can reach about 630 mA through energy management.Moreover,the power harvested by hybridized energy harvester can be wirelessly transmitted up to a distance of about 100 cm in real time to charge mobile phone,anemometer,and hygrometer based on self-resonant coils.The hybridized energy harvester with wireless power transmission has potential applications in large-scale energy collection,long-distance wireless power transmission and sustainably driving mobile electronic devices.

关键词： triboelectric nanogenerator electromagnetic generator Solar cell hybridized energy harvester

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Nitrogen-Doped Amorphous Carbon Homojunction from Palmyra Sugar as a Renewable Solar cell

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Journal of Renewable Materials 2024年第1期12卷 57-69页

作者： Budhi Priyanto Imam Khambali Irma Septi Ardiani Khoirotun Nadhiyah Anna Zakiyatul Laila M.Chasrun Hasani Bima Romadhon Retno Asih Yoyok Cahyono Triwikantoro Darminto Department of Electronic Engineering Faculty of EngineeringUniversitas Muhammadiyah MalangKota MalangIndonesia Advanced Materials Research Group Department of PhysicsFaculty of Science and Data AnalyticsInstitut Teknologi Sepuluh NopemberSurabayaIndonesia Department of Electronic Engineering Faculty of Industrials EngineeringInstitut Teknologi National MalangKota MalangIndonesia

An a-C/a-C:N junction,which used palmyra sugar as the carbon source and ammonium hydroxide(NH4OH)as the dopant source,was successfully deposited on the ITO glass substrate using the nano-spraying method.The current-voltage relationship of the junction was found to be a Schottky-like contact,and therefore the junction shows the characteristic rectifiers.This means the a-C and a-C:N are semiconductors with different types of conduction.Moreover,the samples showed an increase in current and voltage value when exposed to visible light(bright state)compared to the dark condition,thereby,indicating the creation of electron-hole pairs during the exposure.It was also discovered that the relationship between current and voltage for the a-C/a-C:N junction sample formed a curve that satisfies the rule of the photovoltaic effect when exposed to visible light from a light bulb.The exposure of this sample to direct sunlight at AM 1.5 conditions produced a curve that meets the rules for the emergence of the photovoltaic effect with higher characteristics for the current-voltage relationship.Thus,the a-C/a-C:N junction sample is a Solar cell successfully fabricated using a sample method and has a maximum efficiency of 0.0013%.

关键词： Solar cell amorphous carbon palmyra sugar

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Easy-to-fabricate high efficiency silicon nanowires Solar cell modified by CdTe and zinc tetraphenyl porphyrin nanostructures

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Journal of Energy Chemistry 2021年第12期30卷 484-497,I0012页

作者： Debanjan Maity Saurabh Kumar Pathak Melepurath Deepa Department of Chemistry Indian Institute of Technology HyderabadKandiSangareddyTelangana 502284India

Liquid junction Solar cell(LJSC) with vertically silicon nanowires(SiNWs) as the primary photosensitizer,co-sensitized with luminescent and narrow gap CdTe nanoparticles,and cuboidal microstructures of zinc tetraphenyl porphyrin(ZnTPP) dye offers broad and intense visible light absorption that translates into a maximum power conversion efficiency(PCE) of 9.09%,when combined with a polymeric gel of a I_(2)/I^(-)redox couple as the hole transport material and a counter electrode(CE) of poly(3,4-ethyelenedioxythio phene) doped with imide ions(PEDOT-N(CF_(3) SO_(2))_(2)),under 1 sun irradiance.The p-type CdTe efficiently scavenges holes from SiNWs and simultaneously allows the passage of photoexcited electrons from ZnTPP to SiNWs via electrical conduction thus imparting an enhanced Solar cell performance.Cosensitization also supresses back electron transfer effectively,as is inferred from a ~68% enhancement in PCE compared to SiNWs alone.Optimization of the CE entailed the evaluation of the effect of dopant anion:imide versus dicyanamide in PEDOT,and revealed that the presence of macro-cracks in the polymer surface,a deeper work function,and a lower electrical conductance are the shortcomings of the dicyanamide doped PEDOT and reduce the overall PCE,compared to imide.This study brings out how by judicious choice of photoanode and CE components,efficient,stable and easy-to-assemble LJSCs can be developed.

关键词： Silicon Nanowires Porphyrin Solar cell Hole transfer

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A downshifting Eu^3+doped glass embedded with concave pyramid microstructure to improve the efficiency of silicon Solar cell

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Journal of Rare Earths 2020年第11期38卷 1158-1164,I0001页

作者： Xing Yang Jiachao Chen Songsheng Zheng Chao Chen College of Energy Xiamen UniversityXiamen 361005China

The average photoelectric conversion efficiency(PCE)of a bare mono crystalline silicon Solar cell is 14.71%±0.03%under AM1.5.It decreases to 14.20%±0.005%when covering an un-doped flat glass on the Solar cell,and it goes down to 14.10%±0.005%by using a 5 wt%Eu^3+doped glass.The absorptions of the Eu^3+doped CPM glass one-to-one match the excitation spectra at 362,381,393,400,413 and464 nm,which are related to the transitions of 7 F0→(5 D4,5 G2,5 L6,5 D3),7 F1→5 D3,and 7 F0→5 D2,respectively.In addition,a concave pyramid microstructure(CPM)is embedded in the glass surface to increase light transmittance.The average PCE increases to 14.61%±0.07%when a 5 wt%Eu^3+doped CPM glass covers on the silicon Solar cell.Compared with the un-doped flat glass,a net increase of the PCE is0.41%,where the 0.16%increment of PCE is from the lighting trapping of the CPM structure,and the downshifting of near ultraviolet(NUV)light by Eu^3+ion donates the other 0.25%increment.It confirms that the as-prepared Eu^3+doped CPM glass has a good downshifting and antireflection function.

关键词： Solar cell Concave pyramid microstructure Eu^3+doped glass Photoelectric conversion efficiency Rare earths

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WO_(3) passivation layer-coated nanostructured TiO_(2): An efficient defect engineered photoelectrode for dye sensitized Solar cell

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Journal of Semiconductors 2021年第5期42卷 91-98页

作者： Arya Babu Arya Vasanth Shantikumar Nair Mariyappan Shanmugam Amrita Centre for Nanosciences and Molecular Medicine Amrita Vishwa VidyapeethamKochiKerala-682041India

Major loss factors for photo-generated electrons due to the presence of surface defects in titanium dioxide(Ti O_2)were controlled by RF-sputtered tungsten trioxide(WO_3) passivation. X-ray photoelectron spectroscopy assured the coating of WO3 on the Ti O_2 nanoparticle layer by showing Ti 2 p, W 4 f and O 1 s characteristic peaks and were further confirmed by X-ray diffraction studies. The coating of WO_3 on the Ti O_2 nanoparticle layer did not affect dye adsorption significantly. Dye sensitized Solar cells(DSSCs) fabricated using WO_3-coated Ti O_2 showed an enhancement of ~10% compared to DSSCs fabricated using pristine Ti O_2-based photo-electrodes. It is attributed to the WO_3 passivation on Ti O_2 that creates an energy barrier which favored photo-electron injection by tunneling but blocked reverse electron recombination pathways towards holes available in highest occupied molecular orbital of the dye molecules. It was further evidenced that there is an optimum thickness(duration of coating) of WO_3 to improve the DSSC performance and longer duration of WO_3 suppressed photo-electron injection from dye to Ti O_2 as inferred from the detrimental effect in short circuit current density values. RF-sputtering yields pinhole-free,highly uniform and conformal coating of WO_3 onto any area of interest, which can be considered for an effective surface passivation for nanostructured photovoltaic devices.

关键词： charge transport recombination tungsten oxide Solar cell interface defects

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Design and simulation of type-1 graphene/Si quantum dot superlattice for intermediate-band Solar cell applications

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Frontiers of Optoelectronics 2022年第4期15卷 9-17页

作者： Masumeh Sarkhoush Hassan Rasooli Saghai Hadi Soofi Department of Electrical Engineering Shabestar BranchIslamic Azad UniversityShabestar ***Iran Department of Electrical Engineering Tabriz BranchIslamic Azad UniversityTabriz ***Iran Faculty of Electrical and Computer Engineering University of TabrizTabriz ***Iran

Recent experiments suggest graphene-based materials as candidates for use in future electronic and optoelectronic devices.In this study,we propose a new multilayer quantum dot(QD)superlattice(SL)structure with graphene as the core and silicon(Si)as the shell of QD.The Slater-Koster tight-binding method based on Bloch theory is exploited to investigate the band structure and energy states of the graphene/Si QD.Results reveal that the graphene/Si QD is a type-I QD and the ground state is 0.6 eV above the valance band.The results also suggest that the graphene/Si QD can be potentially used to create a sub-bandgap in all Si-based intermediate-band Solar cells(IBSC).The energy level hybridization in a SL of graphene/Si QDs is investigated and it is observed that the mini-band formation is under the infuence of inter-dot spacing among QDs.To evaluate the impact of the graphene/Si QD SL on the performance of Si-based Solar cells,we design an IBSC based on the graphene/Si QD(QDIBSC)and calculate its short-circuit current density(J_(sc))and carrier generation rate(G)using the 2D fnite diference time domain(FDTD)method.In comparison with the standard Si-based Solar cell which records J_(sc)=16.9067 mA/cm^(2)and G=1.48943×10^(28)m^(−3)⋅s^(−1),the graphene/Si QD IBSC with 2 layers of QDs presents Jsc=36.4193 mA/cm^(2)and G=7.94192×10^(28)m^(−3)⋅s^(−1),ofering considerable improvement.Finally,the efects of the number of QD layers(L)and the height of QD(H)on the performance of the graphene/Si QD IBSC are discussed.

关键词： Graphene/silicon quantum dot Intermediate-band Solar cell Superlattice

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Effect of deposited temperatures of the buffer layer on the band offset of CZTS/In2S3 heterostructure and its Solar cell performance

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Chinese Physics B 2017年第4期26卷 356-361页

作者：俞金玲郑重明董丽美程树英赖云锋郑巧周海芳贾宏杰张红 Institute of Micro/Nano Devices and Solar cells School of Physics and Information EngineeringFuzhou UniversityFuzhou 350108China Jiangsu Collaborative Innovation Center of Photovolatic Science and EngineeringChangzhou UniversityChangzhou 213164China

The effect of the deposition temperature of the buffer layer In_2S_3 on the band alignment of CZTS/In_2S_3 heterostructures and the Solar cell performance have been investigated.The In_2S_3 films are prepared by thermal evaporation method at temperatures of 30,100,150,and 200 ℃,respectively.By using x-ray photoelectron spectroscopy（XPS）,the valence band offsets（VBO） are determined to be-0.28 ±0.1,-0.28 ±0.1,-0.34 ±0.1,and-0.42 ±0.1 eV for the CZTS/In_2S_3heterostructures deposited at 30,100,150,and 200 ℃,respectively,and the corresponding conduction band offsets（CBO）are found to be 0.3 ±0.1,0.41 ±0.1,0.22±0.1,and 0.01 ±0.1 eV,respectively.The XPS study also reveals that interdiffusion of In and Cu occurs at the interface of the heterostructures,which is especially serious at 200 ℃ leading to large amount of interface defects or the formation of CuInS_2 phase at the interface.The CZTS Solar cell with the buffer layer In_2S_3 deposited at 150 ℃ shows the best performance due to the proper CBO value at the heterostructure interface and the improved crystal quality of In_2S_3 film induced by the appropriate deposition temperature.The device prepared at 100 ℃presents the poorest performance owing to too high a value of CBO.It is demonstrated that the deposition temperature is a crucial parameter to control the quality of the Solar cells.

关键词： band offset deposition temperature CZTS/In2S3 heterostructure Solar cell

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Study on the performance of titanium film as a diffusion barrier layer for CIGS solar-cell application on stainless-steel substrates

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Clean Energy 2019年第3期3卷 217-221页

作者： Xinxian Jiang Boyan Li Binbin Song Shuwang Zhang Yang Qiu Ying Zhao Dalong Zhong R&D Department NICE Solar PV Research LtdBeijing 102209China Beijing Engineering Research Center of Nano-Structure Thin-Film Solar cell Beijing 102209China

In this paper,pure titanium(Ti)thin films deposited by radio frequency sputtering were used as a diffusion barrier layer in a flexible copper indium gallium selenium(CIGS)Solar cell on a stainless-steel foil and characterized by X-ray diffraction,scanning electron microscopy and second ion mass spectroscopy measurement methods.The influences of the magnetron sputtering pressure on the surface morphology and preferred crystal orientation of Ti films are discussed.It was found that the Ti film showed a(001)preferred orientation and smooth surface topography at lower deposition pressure,while(002)preferred orientation and relatively rough surface topography at higher deposition pressure.In addition,Ti films made with different process pressures were deposited as the barriers and the second ion mass spectroscopy results indicated that a Ti film with the thickness of 200 nm was able to effectively block Fe and Cr diffusion from the stainless-steel foil into the CIGS absorber across the molybdenum back contact.The Ti barrier significantly improved the conversion efficiency of the CIGS Solar cell.

关键词： Solar cell thin film flexible CIGS Solar cell barrier layer

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Transparent conducting indium-tin-oxide(ITO) film as full front electrode in Ⅲ–Ⅴ compound Solar cell

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Chinese Physics B 2017年第3期26卷 495-499页

作者：代盼卢建娅谭明王青松吴渊渊季莲边历峰陆书龙杨辉 Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano- Tech and Nano-Bionics Chinese Academy of Sciences (CAS) Suzhou 215123 China

The application of transparent conducting indium-tin-oxide （ITO） film as full front electrode replacing the conven- tional bus-bar metal electrode in III-V compound GalnP Solar cell was proposed. A high-quality, non-rectifying contact between ITO and 10 nm N＋-GaAs contact layer was formed, which is benefiting from a high carrier concentration of the terrilium-doped N＋-GaAs layer, up to 2×10^19 cm^-3. A good device performance of the GalnP Solar cell with the ITO electrode was observed. This result indicates a great potential of transparent conducting films in the future fabrication of larger area flexible III-V Solar cell.

关键词： full indium-tin-oxide （ITO） electrode specific contact resistance Solar cell

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Enhanced absorption of Solar cell made of photonic crystal by geometrical .design

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Frontiers of Optoelectronics 2016年第1期9卷 93-98页

作者： Asma OUANOUGHI Abdesselam HOCINI Djamel KHEDROUCHE Laboratoire d'Analyse des Signaux et Systemes Department of Electronics University of Mohamed Boudiaf of M'sila BE 166 Route Ichebilia M'sila 28000 Algeri

In this paper, via numerical simulation we designed the geometry of Solar cell made by onedimensional （1D） and two-dimensional （2D） photonic crystals with two kinds of materiel （silicon （Si） and hydrogenated amorphous silicon （a-Si：H）） in order to enhance its absorption. The absorption characteristics of light in the Solar cell structures are simulated by using finite-difference time-domain （FDTD） method. The calculation results show that the enhancement of absorption in patterned structure is apparent comparing to the unpatterned one, which proves the ability of the structure to produce photonic crystal Solar cell. We found Solar cell geometries as a 2D photonic crystal enable to increase the absorption between 380 and 750 nm.

关键词： finite-difference time-domain two-dimensional （2D） photonic crystals Solar cell

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