Photoelectrodes and sensitizers are the vital components of future low-cost dye-sensitized solar cells which are used to meet the present energy demand. Herein, ZnS–CdS thin film photoelectrodes (WE) prepared on steel substrate by electrodeposition method are sensitized by chlorophyll extract and combined with graphite counter electrode, both being dipped in sulphide–polysulphide redox electrolytes (S²⁻/S ²⁻_n ) to form the dye-sensitized solar cells with the following configuration:\({\text{photoelectrode}} + {\text{dye}}//{\text{Na}}_{2} {\text{S}}(1{\text{M}}) + {\text{NaOH}}(1{\text{M}}) + {\text{S}}(1{\text{M}})//{\text{C}}({\text{Graphite}}).\)The photoelectrochemical characterizations of the dye-sensitized thin film photoelectrodes under investigation include current–voltage (I–V) characteristics in dark and light, spectral photoresponse and cells power output. Photoelectrodes are found to be n-type semiconductors. From the power output curves, the light-to-electricity conversion efficiency of dye-sensitized ZnS–CdS electrode (8 h sensitization)-based solar cells, short-circuit current density (J_sc) and open-circuit voltage (V_oc) is found to be 0.29, 0.51 mA/cm² and 0.34 V respectively. The PXRD results show that the fabricated mixed ZnS–CdS thin films are made up of nanocrystals of size ~ 9.12 nm. Surface morphology of the films is studied, and SEM micrograms establish the polycrystalline nature of mixed ZnS–CdS thin films. The EDAX (energy diffraction analysis of X-ray) results show the presence of Zn, Cd and S in the thin films.

光电电极和敏化剂是未来低成本染料敏化太阳能电池的重要组成部分，可用于满足当前的能源需求。本文中，通过电沉积法在钢基材上制备的ZnS–CdS薄膜光电极（WE）通过叶绿素提取物敏化，并与石墨对电极结合，均浸入硫化物–多硫化物氧化还原电解质（S ²⁻ / S ²⁻ _n）中。形成具有以下配置的染料敏化太阳能电池：\（{\ text {photoelectrode}} + {\ text {dye}} // {\ text {Na}} _ {2} {\ text {S}}（ 1 {\ text {M}}）+ {\ text {NaOH}}（1 {\ text {M}}）+ {\ text {S}}（1 {\ text {M}}）// {\ text {C}}（{\ text {Graphite}}）。\） 所研究的染料敏化薄膜光电极的光电化学特征包括在暗和光下的电流-电压（IV）特性，光谱光响应和电池功率输出。发现光电电极是n型半导体。根据功率输出曲线，基于染料敏化的ZnS–CdS电极（敏化8 h）的太阳能电池的光电转换效率，短路电流密度（J _sc）和开路电压（V _oc）被发现是0.29，0.51 mA / cm ²和0.34V。PXRD结果表明，所制备的ZnS–CdS混合薄膜是由大小约为9.12 nm的纳米晶体组成的。研究了薄膜的表面形态，并用SEM显微照片确定了ZnS–CdS混合薄膜的多晶性质。EDAX（X射线能量衍射分析）结果表明，薄膜中存在Zn，Cd和S。