形成具有紧密接触杂化界面、相分离尺度严格控制在激子扩散长度范围的稳定有序杂化纳米结构，构建p-i-n型电池是提高杂化太阳电池效率和稳定性的关键。本项目以全共轭两亲性嵌段共聚物自组装形成的热力学稳定的层状有序纳米结构为模板，采用原子层沉积技术，原位构建有序杂化纳米结构及其p-i-n光伏电池。利用亲水嵌段对金属离子的配位能力，将纳米晶生长限制在亲水相，研究聚合物自组装对纳米晶区尺度、分布的影响，实现相分离尺度严格控制在10-20nm，且有序分布，提高激子分离、载流子传输和收集效率；研究亲水嵌段结构和生长条件对纳米晶尺寸、形貌和表面态的原位调控机制，形成紧密接触的杂化界面，提高电荷转移效率，增强纳米晶之间电荷传输；研究生长条件对纳米晶纵向分布的影响，获得p-i-n型器件，提高光吸收，降低电荷复合几率；研究热力学稳定的嵌段共聚物自组装结构与杂化纳米结构稳定性之间的关联，探讨稳定机制，提高稳定性。

Formation of intimate contact between conjugated polymers and inorganic semiconducting nanocrystals (NCs), achievement of stable and well-ordered hybrid nanostructures with the phase separation size equal to the exciton diffusion length and fabrication of solar cells with the p-i-n structure can effectively improve the efficiency and stability of conjugated polymer/inorganic semiconductor hybrid solar cells. In this project, the all-conjugated amphiphilic block copolymers are rationally designed and synthesized. The all-conjugated amphiphilic block copolymers can self-assemble to form well-ordered lamellar microphase separation nanostructures with thermodymamic stability. Then stable and ordered hybrid nanostructures will be fabricated in-situ based on the self-assembled template of block copolymers via atomic layer deposition (ALD) technique. By the application of the coordination between the polar side chains of hydrophilic segments and metal ions, the growth of NCs can be confined in hydrophilic segments. The effect of self-assembled template microstructure on the domain sizes and distribution of NCs will be investigated. Such approach can strictly confine the phase segregation size of hybrid system in 10-20 nm and realize the ordered distribution of NCs in organic matrix to obtain the ordered hybrid nanostructres to improve the efficiencies of exciton dissociation, carriers transport and collection. The influence of the polar side chain molecular structures of hydrophilic segments and growth condition on the size, morphology and surface state of NCs will be observed. And the well-defined and intimate polymers-semiconductor and adjacent NCs/NCs interface will be achieved to facilitate the photoinduced charge separation and carriers transport. The effect of ALD growth condition on the vertical distribution of NCs will also be investigated and the p-i-n photovoltaic device will be fabricated to improve photon absorption and decrease charge recombination. Meanwhile, the relationship between thermodymamic stability of block copolymer self-assembled template and hybrid system stability will be researched and the stability mechanism will be discussed to improve the stability of hybrid solar cells.