Light-induced fine-tuning of optical cavities for organic optoelectronic devices.

ABSTRACT: Precise structural control is essential for high-performance semiconductors. In organic electronics, traditional methods for tuning the dimensions of device structures often rely on cumbersome, limited-resolution processes such as shadow mask patterning, printing, or viscosity tuning. Here, we report ultraviolet (UV) irradiation in ambient conditions as a transformative approach for tuning structural parameters of organic small molecule hole transport layers (HTLs) in vertical and lateral directions. The method preserves HTL conductivity while facilitating uniform thickness reduction through synergistic photo-induced oligomerization and photo-oxidative layer shrinking. Controlled thinning applies to various organic materials. In cavity architectures, UV-treated organic photodetectors show

SUBMITTER: Xing S 

PROVIDER: S-EPMC12462449 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature