Bulk heterojunction photovoltaic cells based on Merocyanine dye aggregates

基于部花青染料聚集体的体异质结光伏电池

• 批准号: 65799249
• 负责人: Professor Dr. Bernd Engels
• 金额: --
• 依托单位: Institut für Physikalische Chemie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/65799249?language=en
• 关键词: Bulk; heterojunction; photovoltaic; cells; based

Development of solution processable bulk heterojunction (BHJ) devices based on lowmolecular- weight organic compounds is an emerging research field with high potential for cost-effective generation of electricity from solar light. Until to date, only few compounds could be identified as suitable electron donor components for such devices. Thus, exploration of new efficient molecular semiconductors for this purpose is a challenging, but potentially rewarding, task. Our recent observation that dipolar merocyanine dyes, which are widely applied as nonlinear optical and photorefractive materials, also exhibit photovoltaic activities motivated us to explore the potential of this traditional class of colorants for solution processable bulk heterojunction (BHJ) solar cells. Thus, the major objective of our initial proposal within the DFG priority program “SPP 1355: Elementary Processes of Organic Photovoltaics” has been the investigation of photovoltaic efficiencies of blends of bismerocyanine dyes, which can form supramolecular polymers, with fullerene derivative PCBM ([6,6]-phenyl-C61-butyric acid methyl ester). As the bismerocyanine dyes that we have studied so far, show rather low power conversion efficiencies due to their poor selfaggregation propensity and unfavourable solubilities, in the forthcoming project period we will focus on bismerocyanine dyes with enhanced solubility and self-assembly propensity to adequately address the concept of supramolecular polymerization. Furthermore, we will extend our concept to trismerocyanines, which will lead to branched 3D-structures and networks.

基于低分子量有机化合物的可溶液加工的本体异质结（BHJ）器件的开发是一个新兴的研究领域，其具有从太阳光成本有效地发电的高潜力。迄今为止，只有少数化合物可被确定为用于此类装置的合适的电子供体组分。因此，为此目的探索新的高效分子半导体是一项具有挑战性但可能有益的任务。我们最近的观察，偶极汞染料，这是广泛应用的非线性光学和光折变材料，也表现出光伏活动促使我们探索这种传统的着色剂类的溶液可加工的本体异质结（BHJ）太阳能电池的潜力。因此，我们在DFG优先计划“SPP 1355：有机光致发光的基本过程”中的初始提案的主要目标是研究可以形成超分子聚合物的铋汞化合物染料与富勒烯衍生物PCBM（[6，6]-苯基-C61-丁酸甲酯）的共混物的光伏效率。由于我们迄今为止研究的铋汞染料由于其较差的自聚集倾向和不利的溶解性而显示出相当低的功率转换效率，在即将到来的项目期间，我们将专注于具有增强的溶解性和自组装倾向的铋汞染料，以充分解决超分子聚合的概念。此外，我们将把我们的概念扩展到三菁，这将导致分支的3D结构和网络。