For the hybrid organic-inorganic halide perovskite (HHPs) material, oxygen passivation could enhance the photoluminescence intensity, while it also deteriorates the stability of HHPs film or device. It is a challenge how to use oxygen passivation to improve the efficiency and stability of the HHPs solar cells simultaneously. Here we reported a novel and simple method for natural passivation of the perovskite layer with oxygen in ambient air by exclusion of light illumination. The HHPs solar cells were fabricated by deposition of hole transport layer after oxygen passivation. By optimizing the passivation conditions, the power conversion efficiency of the solar cells increases to 20.1% from 17.3% for those without passivation. Meanwhile, the stability of the HHPs solar cells with passivation was improved. This work is the first report applying oxygen passivation to improve the efficiency and stability of HHPs solar cells simultaneously.

对于杂化有机-无机卤化物钙钛矿（HHPs）材料，氧钝化可增强光致发光强度，同时也会降低HHPs膜或器件的稳定性。如何利用氧钝化同时提高HHP太阳能电池的效率和稳定性是一个挑战。在这里，我们报道了一种新颖而简单的方法，可通过排除光照射使周围的空气中的氧自然钙钛矿层自然钝化。通过在氧钝化后沉积空穴传输层来制造HHP太阳能电池。通过优化钝化条件，太阳能电池的功率转换效率从没有钝化的太阳能电池的17.3％提高到20.1％。同时，钝化的HHPs太阳能电池的稳定性得到改善。