In the present investigation, solar cells have been fabricated using Cds/CdSe quantum dots sensitized ZnO photoanode for solar cell application. Photocurrent-voltage analysis and electrochemical impedance spectroscopy (EIS) measurements have been performed to investigate the electron transport and recombination of charge carriers in quantum dot-sensitized solar cells (QDSSCs) based on ZnO photoanodes. This dynamic study reveals that the CdS/CdSe sensitized aluminium (Al) doped ZnO NPs photoanode solar cell performs ultrafast electron transport and high charge collection efficiency (80 %). As a consequence, a power conversion efficiency as high as 5.32 % (J_SC = 12.86 mA/cm², V_OC = 600 mV, FF = 69 %) for aluminium doped ZnO NPs/CdS/CdSe photoelectrode based QDSSC is observed under one sun AM 1.5 G illumination (100 mW cm^-2). This result highlights the necessity of treating QD-sensitized solar cells from another perspective than dye sensitized solar cells, considering the fundamental differences in their behavior.

中文翻译：

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CdS / CdSe量子点敏化太阳能电池对ZnO-Nb2O5核/壳和铝掺杂ZnO电子传输层的性能

在本研究中，已经使用Cds / CdSe量子点敏化的ZnO光电阳极制造了太阳能电池，用于太阳能电池应用。已经进行了光电流电压分析和电化学阻抗谱（EIS）测量，以研究基于ZnO光阳极的量子点敏化太阳能电池（QDSSC）中电子载流子的电子传输和复合。这项动态研究表明，CdS / CdSe敏化的铝（Al）掺杂的ZnO NPs光阳极太阳能电池具有超快的电子传输和高的电荷收集效率（80％）。结果，功率转换效率高达5.32％（J _SC = 12.86 mA / cm ²，V _OC对于铝掺杂的ZnO NPs / CdS / CdSe光电极为基础的QDSSC，在一个太阳AM 1.5 G照度（100 mW cm ^-2）下观察到= 600 mV，FF = 69％）。考虑到其行为的根本差异，该结果从不同于染料敏化太阳能电池的另一角度强调了处理QD敏化太阳能电池的必要性。