We recently reported on the effect of dopant sizes on the performance of polythiophene (PT)-based solar cells wherein the PT film was polymerized with 3-{5-[N,N-bis(4-diphenylamino)phenyl]thieno[3,2-b]thiophen-2-yl}-2-cyano-acrylic acid (C207) pre-adsorbed onto the electrode. Herein we utilized n- and p-doped polythiophene (PT) films as part of the solid-state dye-sensitized solar cell (ssDSSCs) based on cis-bis(isothiocyanato)bis(2,2′-bipyridyl-4,4′-dicarboxylato)ruthenium(II) (N3), the most commonly used dye sensitizer. Although the structure of the N3 is different from the chain-like C207, a smooth and homogeneous PT film can still be grown photoelectrochemically into the pores and onto the surface of the N3-covered TiO₂ nanoparticles. The PT films were electrochemically doped with anions (ClO₄⁻ or PF₆⁻) and cations (tetrabutylammonium, TBA⁺, or tetramethylammonium, TMA⁺). TMA⁺, being smaller, leads to a higher doping level in the PT films and a power conversion efficiency of 7.57 ± 0.33%, which is a 33% increase over that constructed with undoped PT films. However, the efficiency of the anion-doped PT films is reduced when compared to that of the undoped PT films. The N3-sensitized solar cell comprising a TMA⁺-doped PT film is 15% more efficient and costs at least 57% less than the PT-based solar cell comprising C207. This study demonstrates that the n-doped PT film can be a useful interfacial modifier, and pre-adsorbed N3 not only assists the growth of smooth PT films, but also enhances light absorption and power conversion efficiency of the resultant DSSC.

我们最近报道了掺杂剂尺寸对基于聚噻吩（PT）的太阳能电池性能的影响，其中PT膜与3- {5- [N，N-双（4-二苯基氨基）苯基]噻吩并[3，将2-b]噻吩-2-基} -2-氰基丙烯酸（C207）预吸附到电极上。在本文中，我们将n和p掺杂的聚噻吩（PT）薄膜用作基于顺式-双（异硫氰酸根）双（2,2'-联吡啶-4,4'的固态染料敏化太阳能电池（ssDSSCs）的一部分-最常用的染料敏化剂-二羧基羧基钌（II）（N3）。尽管N3的结构不同于链状C207，但仍可以通过光电化学方法将光滑均匀的PT膜生长到孔隙中以及被N3覆盖的TiO ₂的表面上纳米粒子。的PT薄膜电化学掺杂有阴离子（CLO ₄ ^-或PF ₆ ^- ）和阳离子（四丁基铵，TBA ⁺，或四甲基，TMA ⁺）。TMA ⁺较小，导致PT膜中的掺杂水平更高，功率转换效率为7.57±0.33％，这比未掺杂PT膜的功率转换效率提高了33％。但是，与未掺杂的PT膜相比，阴离子掺杂的PT膜的效率降低。N3敏化太阳能电池，包含TMA ⁺掺杂的PT薄膜的效率比包含C207的基于PT的太阳能电池高15％，成本至少低57％。这项研究表明，n掺杂的PT膜可以用作有用的界面改性剂，预吸附的N3不仅有助于光滑PT膜的生长，而且还可以提高所得DSSC的光吸收和功率转换效率。