Han Wei, Wang Jin, Li Sihan, Sun Lizetong, Shi Biao, Zhang Qixing, Huang Qian, Zhao Ying, Zhang Xiaodan
Institute of Photoelectronic Thin Film Devices and Technology, Renewable Energy Conversion and Storage Center, State Key Laboratory of Photovoltaic Materials and Cells, Nankai University, Tianjin 300350, P. R. China.
Tianjin Key Laboratory of Efficient Utilization of Solar Energy, Tianjin 300350, P. R. China.
ACS Appl Mater Interfaces. 2025 Feb 12;17(6):9297-9304. doi: 10.1021/acsami.4c18952. Epub 2025 Jan 31.
Perovskite/silicon tandem solar cells have drawn widespread attention owing to their higher power conversion efficiency (PCE). However, reducing the reflection and parasitic absorption as much as possible in the transparent electrode is of considerable interest to promote the tandem device to obtain higher circuit current density (). Furthermore, the carrier vertical and lateral transport capability of transparent electrodes also affects the electrical performance of solar cells. Herein, we designed and realized a stacked structure of a columnar-equiaxed zirconium-doped indium oxide (IZrO) film. The optimal stacked IZrO thin film shows carrier density and mobility of 9.4 × 10 cm and 29.7 cm V s, respectively. Additionally, it also shows superior optical transmittance and lower parasitic absorption in the visible-to-near-infrared region. In addition, reflectance in the perovskite/c-Si tandem solar cell shows an obvious reduction after the application of a stacked IZrO transparent electrode because of the gradient refractive index. Finally, the stacked IZrO transparent electrode was incorporated into P-I-N-type perovskite/textured-silicon tandem solar cells, and the champion stacked IZrO-based device showed PCE of 30.12% with an active area of 1.05 cm.
钙钛矿/硅串联太阳能电池因其较高的功率转换效率（PCE）而受到广泛关注。然而，尽可能降低透明电极中的反射和寄生吸收对于推动串联器件获得更高的电路电流密度（）具有重要意义。此外，透明电极的载流子垂直和横向传输能力也会影响太阳能电池的电学性能。在此，我们设计并实现了柱状等轴掺锆氧化铟（IZrO）薄膜的堆叠结构。优化后的堆叠IZrO薄膜的载流子密度和迁移率分别为9.4×10 cm和29.7 cm V s。此外，它在可见光至近红外区域还表现出优异的光学透过率和较低的寄生吸收。此外，由于梯度折射率，在应用堆叠IZrO透明电极后，钙钛矿/c-Si串联太阳能电池中的反射率明显降低。最后，将堆叠IZrO透明电极集成到P-I-N型钙钛矿/纹理硅串联太阳能电池中，基于堆叠IZrO的最佳器件在1.05 cm的有源面积下显示出30.12%的PCE。
