Abstract

ITΌ-free inverted SMPV1:PC 71 BM solar cells with an Al doped ZnO (AZO) transparent electrodes are fabricated. The AZO thin film prepared by pulsed laser deposition (PLD) technique exhibits high transmission (>85%) and low sheet resistance (∼30 Ω/sq). The absorption spectrums of devices are also simulated by RCWA method to optimize the performance of photocurrent response. The power conversion efficiency of ITO-free inverted small molecule solar cell can reach 4.03% which is close to that of ITO based small molecule solar cell.

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