Optics & Photonics - Photonic Devices + Applications最新文献_第10页

Cyanine dyes in solid state organic heterojunction solar cells 固态有机异质结太阳能电池中的菁染料

Optics & Photonics - Photonic Devices + Applications Pub Date : 2014-10-06 DOI: 10.1117/12.2063977

J. Heier, Chuyao Peng, A. Véron, R. Hany, T. Geiger, F. Nüesch, Marcus Vinícius Gonçalves Vismara, Carlos Frederico de Oliveira Graeff

{"title":"Cyanine dyes in solid state organic heterojunction solar cells","authors":"J. Heier, Chuyao Peng, A. Véron, R. Hany, T. Geiger, F. Nüesch, Marcus Vinícius Gonçalves Vismara, Carlos Frederico de Oliveira Graeff","doi":"10.1117/12.2063977","DOIUrl":"https://doi.org/10.1117/12.2063977","url":null,"abstract":"Today numerous cyanine dyes that are soluble in organic solvents are available, driven by more than a century of research and development of the photographic industry. Several properties specific to cyanine dyes suggest that this material class can be of interest for organic solar cell applications. The main absorption wavelength can be tuned from the ultra-violet to the near-infrared. The unparalleled high absorption coefficients allow using very thin films for harvesting the solar photons. Furthermore, cyanines are cationic polymethine dyes, offering the possibility to modify the materials by defining the counteranion. We here show specifically how counterions can be utilized to tune the bulk morphology when blended with fullerenes. We compare the performance of bilayer heterojunction and bulk heterojunction solar cells for two different dyes absorbing in the visible and the near-infrared. Light-induced Electron Spin Resonance (LESR) was used to study the charge transfers of light induced excitons between cyanine dyes and the archetype fullerene C60. LESR results show good correlation with the cell performance.","PeriodicalId":358951,"journal":{"name":"Optics & Photonics - Photonic Devices + Applications","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134164770","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: 2

Solution processed flexible planar hybrid perovskite solar cells 溶液处理柔性平面杂化钙钛矿太阳能电池

Optics & Photonics - Photonic Devices + Applications Pub Date : 2014-10-06 DOI: 10.1117/12.2061405

H. Gill, A. Kokil, Lian Li, Ravi Mosurkal, J. Kumar

引用次数: 5

High efficiency porphyrin sensitized mesoscopic solar cells 高效卟啉敏化介观太阳能电池

Optics & Photonics - Photonic Devices + Applications Pub Date : 2014-10-06 DOI: 10.1117/12.2061852

F. Giordano, C. Yi, J. Teuscher, S. Zakeeruddin, M. Grätzel

引用次数: 0

Organic solar cells: from lab to roll-to-roll production 有机太阳能电池:从实验室到卷对卷生产

Optics & Photonics - Photonic Devices + Applications Pub Date : 2014-10-06 DOI: 10.1117/12.2061897

C. Uhrich, C. Falkenberg, Jan Rabe, B. Heimke, Matthias Klemet, C. Wilde, R. Wichtendahl, M. Pfeiffer

引用次数: 3

Plasmonic electrodes for organic photovoltaics: polarization-independent absorption enhancement 有机光伏用等离子体电极:偏振无关吸收增强

Optics & Photonics - Photonic Devices + Applications Pub Date : 2014-10-06 DOI: 10.1117/12.2061240

Beibei Zeng, Z. Kafafi, F. Bartoli

引用次数: 3

Nanoaggregation of p3ht in chloroform-anisole solution: relationship between morphology and electrical properties p3ht在氯仿-苯甲醚溶液中的纳米聚集:形态与电学性质的关系

Optics & Photonics - Photonic Devices + Applications Pub Date : 2014-10-06 DOI: 10.1117/12.2061626

U. Bielecka, K. Janus, W. Bartkowiak

引用次数: 4

Correlating domain purity with charge carrier mobility in bulk heterojunction polymer solar cells 块状异质结聚合物太阳能电池中区域纯度与载流子迁移率的关系

Optics & Photonics - Photonic Devices + Applications Pub Date : 2014-10-06 DOI: 10.1117/12.2062089

C. Kästner, Xuechen Jiao, D. Egbe, H. Ade, H. Hoppe

{"title":"Correlating domain purity with charge carrier mobility in bulk heterojunction polymer solar cells","authors":"C. Kästner, Xuechen Jiao, D. Egbe, H. Ade, H. Hoppe","doi":"10.1117/12.2062089","DOIUrl":"https://doi.org/10.1117/12.2062089","url":null,"abstract":"We report on the impact of morphology onto charge carrier transport and photovoltaic properties in bulk heterojunction solar cells. The study is based on ternary blends of amorphous and semi-crystalline anthracene-containing poly(p-phenylene- ethynylene)-alt-poly(p-phenylene-vinylene) (PPE-PPV) copolymers, with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). Both copolymers exhibit the identical backbone, but bear different side-chain substitutions, which in turn yield changes in the conformation from semi-crystalline (AnE-PVab) to amorphous (AnE-PVba). Strongly phase separated domains are observed for binary AnE-PVab:PCBM blends, presumably dueto strong stacking tendency of AnE-PVab. On the other hand and due to good miscibility a fine-scaled homogeneously intermixed amorphous phase is obtained for binary AnE-PVba:PCBM blends. Upon ternary blending the phase separation between the polymers can readily be continuously tuned between coarse grained and fine-scaled. For each photoactive layer composition the dominant domain spacing was evaluated by resonant soft x-ray scattering (R-SoXS) and related to photovoltaic properties and charge carrier mobility. A with the AnE-PVba steadily decaying domain size and a strong correlation between phase separation and charge transport is demonstrated.","PeriodicalId":358951,"journal":{"name":"Optics & Photonics - Photonic Devices + Applications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115236947","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: 7

Photophysics and charge transfer in donor-acceptor triblock copolymer photovoltaic materials 施主-受主三嵌段共聚物光伏材料的光物理和电荷转移

Optics & Photonics - Photonic Devices + Applications Pub Date : 2014-10-06 DOI: 10.1117/12.2076224

Kyra N Schwarz, D. Jones, T. Smith, K. Ghiggino

{"title":"Photophysics and charge transfer in donor-acceptor triblock copolymer photovoltaic materials","authors":"Kyra N Schwarz, D. Jones, T. Smith, K. Ghiggino","doi":"10.1117/12.2076224","DOIUrl":"https://doi.org/10.1117/12.2076224","url":null,"abstract":"Efficient conversion of solar energy to electricity in low-cost organic photovoltaic (OPV) devices requires the complex interplay between multiple processes and components over various length and time scales. Optimizing device morphology to ensure efficient exciton diffusion and charge transport as well as ensuring efficient charge photogeneration is necessary to achieve optimum performance in new materials. The conjugated polymer electron donor PFM (poly(9,9-diocetyluorene-co-bis-N,N-(4-methylphenyl)-bis-N,N-phenyl-1,4-phenylenediamine)) and electron acceptor F8BT (poly[(9,9-di-n-octyluorenyl-2,7-diyl)-alt-(benzo[2,1,3]thiadiazol-4,8-diyl)), comprise the novel triblock copolymer PFM-F8BT-PFM. This copolymer is designed to phase separate on the 20-30 nm scale, a domain size ideal for maximizing exciton collection at the donor-acceptor interface. Using steady-state and ultrafast spectroscopic characterization including high repetition rate transient absorption spectroscopy, the dynamics of charge and energy transfer of the component polymers and the triblock co-polymer have been investigated. The results demonstrate that for the homopolymers solvent dependent exciton transport processes dominate, while in the triblock copolymer solutions transient spectroscopy provides evidence for interfacial charge separation.","PeriodicalId":358951,"journal":{"name":"Optics & Photonics - Photonic Devices + Applications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126183610","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

Reducing the variability in performance of organic solar cells containing vacuum deposited MoOx extraction layers 减少含有真空沉积MoOx萃取层的有机太阳能电池性能的可变性

Optics & Photonics - Photonic Devices + Applications Pub Date : 2014-10-06 DOI: 10.1117/12.2061078

Graeme P. Williams, H. Aziz

{"title":"Reducing the variability in performance of organic solar cells containing vacuum deposited MoOx extraction layers","authors":"Graeme P. Williams, H. Aziz","doi":"10.1117/12.2061078","DOIUrl":"https://doi.org/10.1117/12.2061078","url":null,"abstract":"Reproducibility in efficiency and lifetime of organic solar cells (OSCs) remains a major concern, especially with the development of more complex and modern multi-layer device architectures. In this work, OSCs are studied for their efficiency and photo-stability as a function of the quality of their thermally evaporated MoOx hole extraction layer (HEL). To this end, the characteristics of the MoOx film are demonstrated to change with repeat evaporation runs from the same source material. These variations have strong effects on polymer OSCs (p-OSCs), with an effective halving of the power conversion efficiency after only three MoO3 evaporation runs. In contrast, vacuum deposited small molecule OSCs (sm-OSCs) appear to be unaffected by the history of the MoO3 source material. sm- OSCs are instead shown to be prone to large changes in efficiency as a function of the delay time in between deposition of the MoOx HEL and subsequent photo-active materials. Increased delay time between these deposition steps is also demonstrated to decrease the sm-OSC photo-stability. The results thus emphasize subtleties in materials deposition processes that can play a significant role in obtaining reproducible and scientifically relevant data.","PeriodicalId":358951,"journal":{"name":"Optics & Photonics - Photonic Devices + Applications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130883786","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

Semitransparent organic photovoltaic modules with Ag nanowire top electrodes 顶部电极为银纳米线的半透明有机光伏组件

Optics & Photonics - Photonic Devices + Applications Pub Date : 2014-10-06 DOI: 10.1117/12.2058288

Fei Guo, P. Kubis, T. Przybilla, E. Spiecker, K. Forberich, C. Brabec

引用次数: 2