Flexible and High‐Performance Solution‐Processable Single‐Detector Organic Spectrometer
Yu Zhu, Zhe Zhang, Hao Qin, Y. D. Yang, Jing Zhang, Zhaoyang Yao, Guanghui Li, Yongsheng Chen
Abstract
Abstract Spectrometers are indispensable tools for civil and military‐related optoelectronic applications. To meet the requirements of the revolutionary data/AI‐driven era, next‐generation spectrometers must not only be flexible with minimal sizes but exhibit high accuracy and resolution. In this study, a compact, high‐performance, and flexible organic spectrometer is reported, fabricated using solution processing, which employs an optical cascade architecture by integrating organic electrochromic devices and photodetectors. This organic spectrometer can not only achieve a resolution of 0.56 nm, an accuracy of 0.14 nm, and a broad detection range from 400 to 1000 nm but also realize a vital absolute spectral irradiance measurement ranging from 10 −8 to 10 −4 W cm −2 nm −1 . Additionally, its intrinsic flexibility and highly replaceable feasibility of bandgap‐tunable organic materials enable their high applicability with excellent portability and adaptability in the upcoming data/AI‐driven era or scenarios.