Incorporating photonic layers into polymer solar cells

将光子层纳入聚合物太阳能电池

• 批准号: 0933435
• 负责人: Adam Moule
• 金额: $ 31.69万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-01 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0933435&HistoricalAwards=false
• 关键词: Incorporating; photonic; layers; into; polymer

0933435MouleThis award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).SummaryIn this proposal, the PIs will determine whether monolayers of nanoparticles with tuned surface plasmon polaron (SPP) frequencies can be effectively used to increase the light absorption and thereby the power conversion efficiency (PCE) of solution processed organic photovoltaic devices (OPV). The proposed project has the following four Intellectual Merits components that will be addressed separately. 1) Synthesis of dielectric/metal core/shell colloids with tuned SPP resonance: In the synthesis component, metal nanoparticles and nano-shells will be fabricated with SPP energies that are tuned from 600 nm - 850 nm. The nano-shells will be fabricated with a SiO2 core and Au, Ag or Cu as the shell layer. The solubility of the colloids and electrical connection to surrounding OPV materials will be controlled using various conjugated surfactants. 2) Deposition of colloid monolayers over large areas: The colloid monolayers will be deposited over large areas using the spin coating technique. Prior UC Davis research has shown that well defined monolayers can be spin coated if the concentration, spinning speed, surface tension and surface adhesion are carefully controlled. 3) Characterization and modeling of colloid film optical properties: The optical properties of the colloid monolayers will be measured using variable angle spectroscopic ellipsometry (VASE) on a variety of substrates. The object of this step is to determine i) Whether light that is absorbed by SPP modes is dissipated thermally or does it dissipate by causing electronic excitation in the OPV materials? ii) If the SPP modes cause electronic excitations, in which direction, over what distance and in what spectral range? iii) What is the spectrum and intensity of light reflected and transmitted from a nano-shell monolayer in such a layer stack? iv) What proportion of the increased optical field in the OPV layers can be attributed to normal scattering and what part to the SPP modes? 4) Fabrication and testing of single and multiple band gap polymer photovoltaic devices incorporating the plasmonic waveguide layers: Tandem (two PV layers) OPV devices will be fabricated to determine if and how much the optical absorption can be increased using layers of photonic metal nanoparticle layers. The specific goal of the device studies is to enhance the absorption of low band gap OPV materials that absorb in the near infrared using the metal colloid monolayers. The broader impacts of this project are in the training of new professionals that are educated in the key area of photovoltaic technology. Special emphasis is placed in this project on supporting a graduate student that is a working mother.

0933435Moule该奖项是根据 2009 年美国复苏和再投资法案（公法 111-5）资助的。摘要在该提案中，PI 将确定具有调谐表面等离子体极化子 (SPP) 频率的单层纳米粒子是否可以有效地用于增加光吸收，从而提高溶液加工有机光伏器件 (OPV) 的功率转换效率 (PCE)。 拟议项目具有以下四个智力优点组成部分，将分别解决。 1）通过调谐SPP共振合成介电/金属核/壳胶体：在合成组件中，金属纳米颗粒和纳米壳将通过在600 nm - 850 nm范围内调谐的SPP能量来制造。纳米壳将由 SiO2 核和 Au、Ag 或 Cu 作为壳层制成。胶体的溶解度以及与周围 OPV 材料的电连接将使用各种共轭表面活性剂进行控制。 2) 大面积沉积胶体单层：将使用旋涂技术在大面积上沉积胶体单层。加州大学戴维斯分校之前的研究表明，如果仔细控制浓度、旋转速度、表面张力和表面粘附力，则可以旋涂清晰的单分子层。 3）胶体膜光学特性的表征和建模：将使用可变角度椭圆偏振光谱仪（VASE）在各种基材上测量胶体单层的光学特性。此步骤的目的是确定 i) SPP 模式吸收的光是通过热耗散还是通过在 OPV 材料中引起电子激发来耗散？ ii) 如果 SPP 模式引起电子激发，在哪个方向、在什么距离以及在什么光谱范围内？ iii) 从这样的层堆叠中的纳米壳单层反射和透射的光的光谱和强度是多少？ iv) OPV 层中增加的光场中，有多少比例可归因于法向散射，又有多少部分归因于 SPP 模式？ 4) 包含等离子体波导层的单带隙和多带隙聚合物光伏器件的制造和测试：将制造串联（两个PV层）OPV器件，以确定是否可以使用光子金属纳米粒子层来增加光吸收以及增加多少。该器件研究的具体目标是增强使用金属胶体单层吸收近红外光的低带隙 OPV 材料的吸收。该项目更广泛的影响在于培训在光伏技术关键领域接受教育的新专业人员。该项目特别强调支持作为职业母亲的研究生。

项目成果

Effect of fractal silver electrodes on charge collection and light distribution in semiconducting organic polymer films

• DOI: 10.1039/c4ta03204g
• 发表时间: 2014-09
• 期刊: Journal of Materials Chemistry
• 作者: Rachel L. Chamousis;Lilian Chang;W. Watterson;R. Montgomery;Richard P. Taylor;A. Moulé;S. Shaheen;B. Ilan;J. Lagemaat;F. Osterloh