SPIE Optics + Photonics for Sustainable Energy最新文献_第2页

The importance of reliability to the SunShot Initiative (Presentation Recording) 可靠性对SunShot计划的重要性(演示记录)

SPIE Optics + Photonics for Sustainable Energy Pub Date : 2015-10-05 DOI: 10.1117/12.2188876

R. Jones-Albertus

引用次数: 0

Eco-friendly spray coating of organic solar cells through water-based nanoparticles ink (Presentation Recording) 基于水基纳米颗粒墨水的有机太阳能电池环保喷涂(演讲录音)

SPIE Optics + Photonics for Sustainable Energy Pub Date : 2015-10-05 DOI: 10.1117/12.2188420

J. Stryckers, Lien D'Olieslaeger, J. Manca, A. Ethirajan, W. Deferme

{"title":"Eco-friendly spray coating of organic solar cells through water-based nanoparticles ink (Presentation Recording)","authors":"J. Stryckers, Lien D'Olieslaeger, J. Manca, A. Ethirajan, W. Deferme","doi":"10.1117/12.2188420","DOIUrl":"https://doi.org/10.1117/12.2188420","url":null,"abstract":"Ultrasonic spray coating is currently proven to be a reliable, flexible and cost efficient fabrication method for printed electronics [1-2]. Ultrasonic nozzles are by design especially well-suited to deposit nano-suspension dispersions. Due to the ultrasonic vibration of the nozzle, droplets having a median diameter of 20 μm are created in a homogeneous droplet cloud and directed towards the substrate. When one prepares an ink having the right wetting properties, thin and homogeneous layers, fully covering the surface, can be achieved. Together with conjugated polymer nanoparticles (NPs), emerging as a new class of nanomaterials, [3] it opens possibilities towards eco-friendly roll-to-roll processing of state-of-the-art organic bulk heterojunction solar cells. A ultrasonic spray coater was used to print the conjugated polymer NP layers under different conditions. A first optimization of the spray coater settings (flow rate, spray speed and temperature) and the ink formulation (water and co-solvent mixture and NP content) was performed for polystyrene particles dissolved in a water-ethanol mixture. As a next step, the low bandgap donor polymer poly[9-(1-octylnonyl)-9H-carbazole-2,7-diyl]-2,5-thiophenediyl-2,1,3-benzothiadiazole-4,7-diyl-2,5-thiophene-diyl] (PCDTBT) [4] and the fullerene acceptor phenyl-C71-butyric acid methyl ester (PCBM[70]) were combined in a water-based blend NP dispersion which was prepared using the mini-emulsion technique. [5,6] Optical Microscopy, profilometry and Scanning Electron Microscopy (SEM) are performed to study the roughness, surface structure, thickness and coverage of the spray coated layers. Finally the printed NP layers are integrated in organic bulk heterojunction solar cells and compared to spin coated reference devices.","PeriodicalId":142821,"journal":{"name":"SPIE Optics + Photonics for Sustainable Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129777902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Embedding solar cell materials with on-board integrated energy storage for load-leveling and dark power delivery (Presentation Recording) 嵌入式太阳能电池材料，机载集成储能，用于负载均衡和暗功率输送(演示记录)

SPIE Optics + Photonics for Sustainable Energy Pub Date : 2015-10-05 DOI: 10.1117/12.2188503

C. Pint, A. Westover, Adam P. Cohn, William R. Erwin, Keith Share, Thomas Metke, Rizia Bardhan

{"title":"Embedding solar cell materials with on-board integrated energy storage for load-leveling and dark power delivery (Presentation Recording)","authors":"C. Pint, A. Westover, Adam P. Cohn, William R. Erwin, Keith Share, Thomas Metke, Rizia Bardhan","doi":"10.1117/12.2188503","DOIUrl":"https://doi.org/10.1117/12.2188503","url":null,"abstract":"This work will discuss our recent advances focused on integrating high power energy storage directly into the native materials of both conventional photovoltaics (PV) and dye-sensitized solar cells (DSSCs). In the first case (PV), we demonstrate the ability to etch high surface-area porous silicon charge storage interfaces directly into the backside of a conventional polycrystalline silicon photovoltaic device exhibiting over 14% efficiency. These high surface area materials are then coupled with solid-state ionic liquid-polymer electrolytes to produce solid-state fully integrated devices where the PV device can directly inject charge into an on-board supercapacitor that can be separately discharged under dark conditions with a Coulombic efficiency of 84%. In a similar manner, we further demonstrate that surface engineered silicon materials can be utilized to replace Pt counterelectrodes in conventional DSSC energy conversion devices. As the silicon counterelectrodes rely strictly on surface Faradaic chemical reactions with the electrolyte on one side of the wafer electrode, we demonstrate double-sided processing of electrodes that enables dual-function of the material for simultaneous energy storage and conversion, each on opposing sides. In both of these devices, we demonstrate the ability to produce an all-silicon coupled energy conversion and storage system through the common ability to convert unused silicon in solar cells into high power silicon-based supercapacitors. Beyond the proof-of-concept design and performance of this integrated solar-storage system, this talk will conclude with a brief discussion of the hurdles and challenges that we envision for this emerging area both from a fundamental and technological viewpoint.","PeriodicalId":142821,"journal":{"name":"SPIE Optics + Photonics for Sustainable Energy","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134537206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PV system reliability program at Sandia National Labs: From material-level to system-level analysis (Presentation Recording) 桑迪亚国家实验室光伏系统可靠性项目:从材料级到系统级分析(演讲录音)

SPIE Optics + Photonics for Sustainable Energy Pub Date : 2015-10-05 DOI: 10.1117/12.2189750

O. Lavrova

引用次数: 0

Solar hydrogen: harvesting light and heat from sun (Presentation Recording) 太阳能氢:从太阳中收集光和热(演讲录音)

SPIE Optics + Photonics for Sustainable Energy Pub Date : 2015-10-05 DOI: 10.1117/12.2195425

Liejin Guo, D. Jing

引用次数: 0

Singlet-based photon upconversion in multichromophore organic thin films (Presentation Recording) 多色团有机薄膜中单线态光子上转换(演示记录)

SPIE Optics + Photonics for Sustainable Energy Pub Date : 2015-10-05 DOI: 10.1117/12.2188991

D. Weingarten, Michael D. LaCount, G. Rumbles, J. van de Lagemaat, M. Lusk, S. Shaheen

{"title":"Singlet-based photon upconversion in multichromophore organic thin films (Presentation Recording)","authors":"D. Weingarten, Michael D. LaCount, G. Rumbles, J. van de Lagemaat, M. Lusk, S. Shaheen","doi":"10.1117/12.2188991","DOIUrl":"https://doi.org/10.1117/12.2188991","url":null,"abstract":"Solid-state energy upconversion has many potential applications, from nonlinear photonics and biophotonics to expanding the spectrum available for solar energy harvest. In organic molecular systems, upconversion is frequently done in solution to mitigate aggregation-induced photoluminescence quenching or to facilitate the diffusion of triplet donors in Triplet-Triplet Annihilation (TTA) systems. Here we demonstrate an organic thin film upconversion system utilizing two-photon absorption (TPA) properties to improve upconversion efficiency. In blend films of Stilbene-420 and Rhodamine 6G we observe a tenfold increase in up-converted fluorescence compared to the fluorescence yield of TPA in pristine stilbene films. While TPA normally has quadratic dependence on excitation intensity, these blend films exhibit sub-quadratic intensity dependence, indicating a combination of linear and quadratic upconversion processes and dramatically improving upconversion efficiency at lower excitation intensities. This improvement in intensity dependence allows for relatively efficient upconversion upon excitation by a nanosecond laser pulse, in contrast to the more expensive femtosecond lasers generally required for excitation in TPA microscopy and similar systems. Time-resolved photoluminescence decay measurements reveal that all excited states involved in this upconversion process are singlets, which indicates the potential for reduced energy losses when compared to TTA upconversion systems and their inherent intersystem-crossing energy losses. We observe emission from both the Rhodamine 6G donor molecules and Stilbene-420 acceptor molecules, indicating the presence of prompt fluorescence from the donor as well as upconversion to the acceptor, and FRET losses from acceptor back to donor. By fitting to a kinetic model we extract rates for these competing processes.","PeriodicalId":142821,"journal":{"name":"SPIE Optics + Photonics for Sustainable Energy","volume":"421 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125854089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel materials for stable perovskite solar cells (Presentation Recording) 稳定钙钛矿太阳能电池的新材料(演讲录音)

SPIE Optics + Photonics for Sustainable Energy Pub Date : 2015-10-05 DOI: 10.1117/12.2186953

A. Abate

{"title":"Novel materials for stable perovskite solar cells (Presentation Recording)","authors":"A. Abate","doi":"10.1117/12.2186953","DOIUrl":"https://doi.org/10.1117/12.2186953","url":null,"abstract":"Organic-inorganic perovskites are quickly overrunning research activities in new materials for cost-effective and high-efficiency photovoltaic technologies. Since the first demonstration from Kojima and co-workers in 2009, several perovskite-based solar cells have been reported and certified with rapidly improving power conversion efficiency. Recent reports demonstrate that perovskites can compete with the most efficient inorganic materials, while they still allow processing from solution as potential advantage to deliver a cost-effective solar technology. Compare to the impressive progress in power conversion efficiency, stability studies are rather poor and often controversial. An intrinsic complication comes from the fact that the stability of perovskite solar cells is strongly affected by any small difference in the device architecture, preparation procedure, materials composition and testing procedure. In the present talk we will focus on the stability of perovskite solar cells in working condition. We will discuss a measuring protocol to extract reliable and reproducible ageing data. We will present new materials and preparation procedures which improve the device lifetime without giving up on high power conversion efficiency.","PeriodicalId":142821,"journal":{"name":"SPIE Optics + Photonics for Sustainable Energy","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125511309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface plasmon enhanced infrared absorption in P3HT-based organic solar cells: the effect of infrared sensitizer (Presentation Recording) 表面等离子体增强p3ht基有机太阳能电池的红外吸收:红外增敏剂的作用(演讲记录)

SPIE Optics + Photonics for Sustainable Energy Pub Date : 2015-10-05 DOI: 10.1117/12.2188710

Sungmo Ahn, A. Nardes, D. Rourke, J. van de Lagemaat, N. Kopidakis, W. Park

{"title":"Surface plasmon enhanced infrared absorption in P3HT-based organic solar cells: the effect of infrared sensitizer (Presentation Recording)","authors":"Sungmo Ahn, A. Nardes, D. Rourke, J. van de Lagemaat, N. Kopidakis, W. Park","doi":"10.1117/12.2188710","DOIUrl":"https://doi.org/10.1117/12.2188710","url":null,"abstract":"We have theoretically and experimentally investigated the effects of Ag-grating electrode on the performance of polymer:fullerene based bulk heterojunction organic solar cells. First, an integrated numerical model has been developed, which is capable of describing both the optical and the electrical properties simultaneously. The Ag-grating patterned back electrode was then designed to enhance the absorption in sub-bandgap region of P3HT:PCBM binary devices. Laser interference lithography and metal lift-off technique were adopted to realize highly-uniform and large-area nanograting patterns. We measured almost 5 times enhancement of the external quantum efficiency at the surface plasmon resonance wavelength. However, the overall improvement in power conversion efficiency was not significant due to the low intrinsic absorption of active layer in this sub-bandgap region. We, then, investigated about the effect of surface plasmon on the ternary device of P3HT:Si-PCPDTBT:ICBA. It was demonstrated that the infrared absorption by the Si-PCPDTBT sensitizer can be substantially enhanced by matching the surface plasmon resonance to the sensitizer absorption band. Besides, we also observed an additional enhancement in the visible range which is due to the scattering effect of the gratings. An overall short-circuit current enhancement of up to 40% was predicted numerically. We have then fabricated the device by the lamination technique and observed a 30% increase in the short circuit current. Plasmon enhancement of sensitized organic solar cell presents a promising pathway to high-efficiency, broadband-absorbing polymer:fullerene bulk heterojunction organic solar cells.","PeriodicalId":142821,"journal":{"name":"SPIE Optics + Photonics for Sustainable Energy","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125463017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Cd-Zn-O-S alloys for optimal buffer layers in thin-film photovoltaics (Presentation Recording) 用于薄膜光伏电池中最佳缓冲层的Cd-Zn-O-S合金(演示记录)

SPIE Optics + Photonics for Sustainable Energy Pub Date : 2015-10-05 DOI: 10.1117/12.2188373

J. Varley, Xiaoqing He, N. Mackie, A. Rockett, V. Lordi

{"title":"Cd-Zn-O-S alloys for optimal buffer layers in thin-film photovoltaics (Presentation Recording)","authors":"J. Varley, Xiaoqing He, N. Mackie, A. Rockett, V. Lordi","doi":"10.1117/12.2188373","DOIUrl":"https://doi.org/10.1117/12.2188373","url":null,"abstract":"Advances in thin-film photovoltaics have largely focused on modifying the absorber layer(s), while the choices for other layers in the solar cell stack have remained somewhat limited. In particular, cadmium sulfide (CdS) is widely used as the buffer layer in typical record devices utilizing absorbers like Cu(In,Ga)Se2 (CIGSe) or Cu2ZnSnS4 (CZTS) despite leading to a loss of solar photocurrent due to its band gap of 2.4 eV. While different buffers such as Zn(S,O,OH) are beginning to become competitive with CdS, the identification of additional wider-band gap alternatives with electrical properties comparable to or better than CdS is highly desirable. Here we use hybrid density functional calculations to characterize CdxZn1-xOyS1-y candidate buffer layers in the quaternary phase space composed by Cd, Zn, O, and S. We focus on the band gaps and band offsets of the alloys to assess strategies for improving absorption losses from conventional CdS buffers while maintaining similar conduction band offsets known to facilitate good device performance. We also consider additional criteria such as lattice matching to identify regions in the composition space that may provide improved epitaxy to CIGSe and CZTS absorbers. Lastly, we incorporate our calculated alloy properties into device model simulations of typical CIGSe devices to identify the CdxZn1-xOyS1-y buffer compositions that lead to the best performance. This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 and funded by the Department of Energy office of Energy Efficiency and Renewable Energy (EERE) through the SunShot Bridging Research Interactions through collaborative Development Grants in Energy (BRIDGE) program.","PeriodicalId":142821,"journal":{"name":"SPIE Optics + Photonics for Sustainable Energy","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126268999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

On the broadband continuous excitation of surface-plasmon-polariton waves in an amorphous silicon solar cell (Presentation Recording) 非晶硅太阳能电池中表面等离子体极化子波的宽带连续激发(演讲记录)

SPIE Optics + Photonics for Sustainable Energy Pub Date : 2015-10-05 DOI: 10.1117/12.2188874

M. Atalla

{"title":"On the broadband continuous excitation of surface-plasmon-polariton waves in an amorphous silicon solar cell (Presentation Recording)","authors":"M. Atalla","doi":"10.1117/12.2188874","DOIUrl":"https://doi.org/10.1117/12.2188874","url":null,"abstract":"Currently, the surface-plasmon-polariton (SPP) waves can be excited only at certain wavelength and certain incidence angle. It is remarkably noticed that the wavenumber of the SPP waves decreases as the incident wavelength increases. This stands against the continuous excitation of SPP waves at certain incidence angle using a practical grating configuration. We hypothesized that the theoretical modeling of SPP waves guided by the interface of a dielectric grating and a metal will help to solve that problem. The aim of the study is to prove that the proposed grating/metal configuration has propensity of guiding SPP waves of relative wavenumber that increases as the incident electromagnetic wavelength increases. This may enable the continuous excitation of SPP waves. The successful attempt of proving the aim of this study will validate the excitation of SPP waves at certain incidence angle but at wider range of incident wavelength. This result will have a great impact on the communication and energy harvesting applications. The rigorous coupled wave analysis (RCWA) is used to solve the Maxwell equations in its differential form. The Newton-Raphson method is used to solve the dispersion equation at the grating/metal interface for the SPP wavenumber. This provides the wavenumber of the SPP waves that can propagate at the grating metal interface. A study for the SPP wave energy decay will also be made through the calculation of the Poynting vector, and show that the propagating SPP waves decay away from the grating/metal interface, which infers the surfacing property of the propagating waves.","PeriodicalId":142821,"journal":{"name":"SPIE Optics + Photonics for Sustainable Energy","volume":"25 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131874328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1