New Tectons for Charge Transfer and Photovoltaics - Single Wall Carbon Nanohorns

用于电荷转移和光伏的新构造——单壁碳纳米角

• 批准号: 53653929
• 负责人: Professor Dr. Dirk M. Guldi
• 金额: --
• 依托单位: Lehrstuhl für Physikalische Chemie I
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/53653929?language=en
• 关键词: New; Tectons; Charge; Transfer; Photovoltaics

The scope of the current proposal is to explore single wall carbon nanohorns (SWNH) as novel nanoscale electron acceptor materials in charge separation and charge transport processes in condensed media and at electrode interfaces. We propose several interlocking approaches involving material synthesis, advanced measurements and characterization methods as well as computational simulations.We see several fundamental advantages relative to the use of single wall carbon nanotubes (SWNT) and other forms of nanocarbons. In particular, SWNH are exclusively semiconducting, are produced in the absence of any catalyst and exhibit high surface areas and porosity. The successful development of organic / organic and inorganic / organic electron donor acceptor nanohybrids using SWNH as acceptor materials is expected to lead to new paradigms in materials design and ultimately to enhanced performance of photovoltaic cells that are light-weight and flexible and thus easily integrated.Our efforts on nanomaterial modification and production – through a modular approach – allows for facile optimization of the desired material, that is, to optimize absorption of the solar spectrum in conjunction with charge injection into SWNH by selection of semiconducting nanocrystal material and surface modification. In this context, we will refine their electronic coupling to SWNH, improve capture efficiency, minimize junction barriers and optimize carrier separation.Based on our initial findings and others efforts in the field, optimization of the electron donor-acceptor interactions by judicious choice of nanomaterials and coupling chemistries should produce functioning charge transfer materials.

当前提案的范围是探索单壁碳纳米角（SWNH）作为新型纳米级电子受体材料，用于凝聚介质和电极界面的电荷分离和电荷传输过程。我们提出了几个连锁的方法，涉及材料合成，先进的测量和表征方法以及计算模拟。我们看到了一些基本的优势，相对于使用单壁碳纳米管（SWNT）和其他形式的纳米碳。特别地，SWNH仅是半导体的，在不存在任何催化剂的情况下生产，并表现出高表面积和孔隙率。利用SWNH作为受体材料成功开发有机/有机和无机/有机电子给体受体纳米杂化物有望为材料设计带来新的范例，并最终提高光伏电池的性能，使其重量轻、灵活，从而易于集成。我们在纳米材料改性和生产方面的努力-通过模块化方法-允许轻松优化所需材料，也就是说，通过选择半导体的半导体材料和表面改性，结合电荷注入SWNH来优化太阳光谱的吸收。在这种情况下，我们将完善他们的电子耦合到SWNH，提高捕获效率，最大限度地减少结势垒和优化载流子separation.Based上我们的初步研究结果和其他人在该领域的努力，通过明智地选择纳米材料和耦合化学优化的电子给体-受体相互作用应该产生功能的电荷转移材料。