针对聚合物染料敏化太阳能电池存在的转换效率偏低的瓶颈问题，以拓宽光谱响应范围为重点，设计与合成一系列以三苯胺为基本给体单元（D）与不同的共轭单元（π），受体单元（A）组合的新型D-π-A型聚合物染料，通过对D、π、A单元不同的修饰对聚合物分子能级进行调控：首先，改变主链结构、柔性、支链结构和长度、分子共轭性等，设计系列具有不同分子结构的三苯胺类D-π-A型聚合物梳状分子；其次，以控制分子量和分子量分布为主要目的，对不同的合成方法和合成条件进行系统研究，实现三苯胺类D-π-A型聚合物的可控合成；再次，较深入的研究三苯胺类D-π-A型聚合物染料分子结构和性质对其在二氧化钛上吸附量、负载方式、吸脱附过程动力学的影响。同时，研究吸附条件（如吸附溶液、吸附温度、压力等）和吸附方式（如共吸附等）对染料分子吸附行为的影响。在此研究基础上，改进染料分子的吸附过程，提高器件性能。

To deal with the low conversion efficiency of polymer Dye Sensitized Solar Cells(DSSCs) ,our resesrch efforts will focus on the following three parts. Firstly,a series of novel Donor (D)-conjugated bridge (π)-Acceptor (A) polymer dyes which use triphenylamine as a D unit connecting with different π and A will be designed and synthesized. Then, the D, π, and A units of polymer dyes will be modified to modulate their molecular level and finally broaden the range of spectral response. Secondly,the backbone structure and flexibility, branch structure and length, conjugated structure are optimized to get a series of comblike D-π-A polymer dyes. To control the molecular weight and molecular weight distribution, we will systematicly study the synthesis methods and conditions to achieve controllable synthesis of triphenylamine-based D-π-A polymer dyes. Furthermore, the influence of molecular structure and properties of triphenylamine-based D-π-A polymer dyes' on their adsorption capacity, adsorption mode and absorption kinetics on the titanium dioxide film will be studied. Moreover, the effect of adsorption conditions (such as solution, temperature, pressure etc.) and adsorption mode (such as coadsorbent) on dye molecules' adsorption behaviors will be futher studied to improve the polymer dyes' device performance.