The low-cost and high-throughout printing techniques are potentially used to process large-area organic solar cells (OSCs). However, high-performance OSCs fabricated via fully printing process have lots of challenges. Herein, OSCs are fabricated via fully doctor blading using subsequently printed electron transport layer (ETL) zinc oxide (ZnO), printed bulk heterojunction (BHJ) active layer composed of poly[(2,6-(4,8-bis(5-(2-ethylhexy)thiophen-2-yl)-benzo[1,2-b:4,5-b’]dithiophene))-alt-(5,5-(1′,3′-di-2-thienyl-5′,7′-bis(2-ethylhexyl)benzo[1′,2′-c:4′5′-c’]dithiophene-4,8-dione))] (PBDB-T) and 3,9-bis(2-methylene-(3-(1,1-dicyano-methylene)-5-methylindanone)-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3 -d:2′,3’ -d’]-s- indaceno[1,2-b:5,6-b’]-dithiophene (IT-M), and printed hole transport layer (HTL) molybdenum oxide (MoO₃). Through the optimization of inks and printing parameters, as well as humidity control, OSCs fabricated via printed ETL ZnO in ambient condition and spin-coated BHJ PBDB-T:IT-M in glovebox produce a power conversion efficiency (PCE) of 10.73%, which is similar to fully spin-coated device. While OSCs fabricated via printed ETL ZnO and BHJ PBDB-T:IT-M in ambient condition can produce a PCE of 10.15%. Furthermore, the PCE up to 9.34% can be achieved for fully printed OSCs with doctor-bladed ETL ZnO, BHJ PBDB-T:IT-M and HTL MoO₃ in ambient condition. These results suggest that high-performance OSCs can be fabricated using printing techniques in ambient condition instead of spin-coating and inert atmosphere, exhibiting great potential to accelerate the commercialization of OSCs.

低成本和高通量的印刷技术可能用于处理大面积有机太阳能电池（OSC）。然而，通过完全印刷工艺制造的高性能OSC面临很多挑战。本文中，OSC是通过使用随后的印刷电子传输层（ETL）氧化锌（ZnO），由聚[（2,6-（4,8-bis（5- （2-乙基己基）噻吩-2-基）-苯并[1,2-b：4,5-b']二噻吩））-alt-（5,5-（1'，3'-di-2-噻吩基） -5'，7'-双（2-乙基己基）苯并[1'，2'-c：4'5'-c']二噻吩-4,8-​​二酮））]（PBDB-T）和3,9 -双（2-亚甲基-（3-（1,1-二氰基亚甲基）-5-甲基茚满酮）-5,5,11,11-四（4-己基苯基）-二硫代[2,3 -d：2' ，3'-d']-s-茚并[1,2-b：5,6-b']-二噻吩（IT-M）和印刷空穴传输层（HTL）氧化钼（MoO ₃）。通过优化油墨和印刷参数以及湿度控制，在环境条件下通过印刷的ETL ZnO和旋涂的杂物箱中的BHJ PBDB-T：IT-M制成的OSC的功率转换效率（PCE）为10.73％，类似于完全旋涂的设备。通过在环境条件下通过印刷的ETL ZnO和BHJ PBDB-T：IT-M制成的OSC可以产生10.15％的PCE。此外，在环境条件下，使用刮刀式ETL ZnO，BHJ PBDB-T：IT-M和HTL MoO _3的全印刷OSC可以实现高达9.34％的PCE 。这些结果表明，可以使用印刷技术在环境条件下代替旋涂和惰性气氛来制造高性能OSC，这显示出加速OSC商业化的巨大潜力。