In this work, we report novel heterojunctions perovskite photodetector architecture utilizing metal-free contact electrodes. The metal-free contact electrodes were exploited to fabricate photoconductor – type perovskite photodetector. The attempt to investigate the effect of passivating the active layers of the as – proposed architecture with electrolytic MAI gave rise to a photodiode – type perovskite photodetector. These two photodetector types are sensitive and responsive to light sources through their dual transparent electrodes faces (N-face and T-face). We also showed that passivating the surfaces of the sandwiched perovskite layers with MAI solution improves the performance of the fabricated photodetectors, where the detectivity is enhanced by a factor of hundred compared to non-passivated devices. The proposed photodetectors architectures demonstrate champion dual-detectivity (1.77 × 10¹⁴ Jones for N-face and 4.64 × 10¹⁴ Jones for T-face), dual-responsivity (1.94 × 10³ A/W for N-face and 1.61 × 10³ A/W for T-face) and high dual – sensitivity (3.3 × 10² for N-face and 1.1 × 10² for T-face). All these properties were obtained from the two faces of the MAI passivated photodetectors under 0.02 mW/cm² red LED illumination and at −2.0 bias voltage. This novel architecture may scale up towards building energy and cost efficient classes of optoelectronic and photovoltaic devices which are responsive to light in two directions.

在这项工作中，我们报告了利用无金属接触电极的新型异质结钙钛矿光电探测器架构。利用无金属的接触电极来制造光电导体–钙钛矿型光电探测器。试图研究用电解MAI钝化原来的结构（建议的体系结构）的影响的方法产生了光电二极管–型钙钛矿光电探测器。这两种光电探测器类型很敏感，并通过其双透明电极面（N面和T面）对光源作出响应。我们还表明，用MAI溶液钝化夹层钙钛矿层的表面可以提高所制造光电探测器的性能，与非钝化器件相比，其探测灵敏度提高了数百倍。¹⁴琼斯为N面和4.64×10 ¹⁴琼斯对于T面），双响应（1.94×10 ³ A / W代表N面和1.61×10 ³ A / W代表T-面）和高双-灵敏度（3.3×10 ²为N面和1.1×10 ²为T-面）。所有这些特性都是在0.02 mW / cm ^2的红色LED照明和-2.0偏置电压下从MAI钝化光电探测器的两个表面获得的。这种新颖的体系结构可以朝着响应于两个方向上的光的建筑能量和成本有效的光电和光伏装置类别扩展。