Kiani Muhammad Salman, Sadirkhanov Zhandos T, Kakimov Alibek G, Parkhomenko Hryhorii P, Ng Annie, Jumabekov Askhat N
Department of Physics, Nazarbayev University, Nur-Sultan 010000, Kazakhstan.
Department of Electrical and Computer Engineering, Nazarbayev University, Nur-Sultan 010000, Kazakhstan.
Nanomaterials (Basel). 2022 Jul 29;12(15):2615. doi: 10.3390/nano12152615.
Flexible and printed perovskite solar cells (PSCs) fabricated on lightweight plastic substrates have many excellent potential applications in emerging new technologies including wearable and portable electronics, the internet of things, smart buildings, etc. To fabricate flexible and printed PSCs, all of the functional layers of devices should be processed at low temperatures. Tin oxide is one of the best metal oxide materials to employ as the electron transport layer (ETL) in PSCs. Herein, the synthesis and application of SnO quantum dots (QDs) to prepare the ETL of flexible and printed PSCs are demonstrated. SnO QDs are synthesized via a solvothermal method and processed to obtain aqueous and printable ETL ink solutions with different QD concentrations. PSCs are fabricated using a slot-die coating method on flexible plastic substrates. The solar cell performance and spectral response of the obtained devices are characterized using a solar simulator and an external quantum efficiency measurement system. The ETLs prepared using 2 wt% SnO QD inks are found to produce devices with a high average power conversion efficiency (PCE) along with a 10% PCE for a champion device. The results obtained in this work provide the research community with a method to prepare fully solution-processed SnO QD-based inks that are suitable for the deposition of SnO ETLs for flexible and printed PSCs.
在轻质塑料基板上制备的柔性及可印刷钙钛矿太阳能电池（PSC）在可穿戴和便携式电子产品、物联网、智能建筑等新兴新技术中具有许多优异的潜在应用。为了制备柔性及可印刷的PSC，器件的所有功能层都应在低温下进行处理。氧化锡是用作PSC中电子传输层（ETL）的最佳金属氧化物材料之一。在此，展示了用于制备柔性及可印刷PSC的ETL的SnO量子点（QD）的合成及应用。通过溶剂热法合成SnO QD，并将其加工成具有不同QD浓度的水性及可印刷ETL油墨溶液。使用狭缝式涂布法在柔性塑料基板上制备PSC。使用太阳能模拟器和外部量子效率测量系统对所得器件的太阳能电池性能和光谱响应进行表征。发现使用2 wt% SnO QD油墨制备的ETL可生产出具有高平均功率转换效率（PCE）的器件，其中冠军器件的PCE为10%。这项工作中获得的结果为研究界提供了一种制备完全溶液处理的基于SnO QD的油墨的方法，该油墨适用于沉积用于柔性及可印刷PSC的SnO ETL。
