Advanced module optics of textured perovskite silicon tandem solar cells
Advanced module optics of textured perovskite silicon tandem solar cells
复制标题
DOI：
10.1117/12.2309768
复制
发表时间：
2018-05
期刊：
影响因子：
--
通讯作者：
N. Tucher;O. Höhn;B. Bläsi;J. Goldschmidt
中科院分区：
文献类型：
--
作者：
N. Tucher;O. Höhn;B. Bläsi;J. Goldschmidt
钙钛矿硅串联太阳能电池可以克服单结硅太阳能电池的效率限制。光学建模对器件优化起着至关重要的作用，但如果涉及光学薄层和厚层以及界面纹理（如随机金字塔），则会变得复杂。在这项工作中，为了比较具有平面和纹理正面的钙钛矿硅串联太阳能电池，应用了OPTOS模拟形式。对正面为平面、背面为纹理的结构进行建模，结果显示光电流密度为18.2 mA/cm2。对于具有纹理正面和平面背面的系统，尽管Spiro-OMeTAD和ITO层中的寄生吸收增加，但反射率降低导致光电流密度为19.6 mA/cm2。在OPTOS模拟中，考虑到全模块堆栈，EVA的前侧反射率和寄生吸收增加。得到的光电流密度（17.8 mA/cm2和18.9 mA/cm2）之间的差异表明，不仅在单元水平上，而且在整个模块堆栈中，具有纹理的前侧面所研究的系统具有光学优势。
Perovskite silicon tandem solar cells can overcome the efficiency limit of single junction silicon solar cells. Optical modeling plays a crucial role for the device optimization but it becomes complex if optically thin and thick layers as well as interface textures, such as random pyramids, are involved. Within this work, the OPTOS simulation formalism is applied in order to compare perovskite silicon tandem solar cells with planar and textured front side. Modeling the configuration with planar front side and textured rear exhibits a matched photocurrent density of 18.2 mA/cm2. For the system with textured front and planar rear side the reduced reflectance leads to a photocurrent density of 19.6 mA/cm2 although parasitic absorption in the Spiro-OMeTAD and ITO layers increases. Taking into account the full module stack in the OPTOS simulation shows an increased front side reflectance and parasitic absorption in the EVA. The difference between the resulting photocurrent densities (17.8 mA/cm2 and 18.9 mA/cm2) demonstrates the optical superiority of the investigated system with textured front side not only at cell level but also in the full module stack.