- Lee, Kyuho;
- Higashitarumizu, Naoki;
- Wang, Shu;
- Kim, Chunghee;
- Ho, Chun;
- Oh, Jin;
- Zan, Guangtao;
- Madsen, Morten;
- Lee, Tae-Woo;
- Chrzan, Daryl;
- Park, Cheolmin;
- Javey, Ali
A weak van der Waals (vdW) force in layered materials enables their isolation into thin flakes through mechanical exfoliation while sustaining their intrinsic electronic and optical properties. Here, we introduce a universal roll-printing method capable of producing vdW multilayer films on wafer-to-meter scale. This process uses sequential exfoliation and transfer of layered materials from the powder sources to target substrates through a repeated rolling of a cylindrical metal drum. We achieve uniformly coated films with a library of vdW powders on various mechanically rigid and flexible substrates. The printed films are configured into different devices including light-emitting diodes and photodetectors. The presented technique offers substantial benefits in terms of cost efficiency and a low thermal budget while offering high material quality.