Our experiments reveal that the coherent excitonic states of MOBPcxH2OBPc1-x and H2OBNcxH2OBPc1-x crystalline thin films can be tuned continuously as a function of alloy concentration (0 < x < 1). Moreover, the solution-processed technique used to fabricate these crystalline thin films provides us an unprecedented advantage in designing and controlling the bandgap tunability as well as achieving the desired exciton coherent length for variety of applications.
ACCESS THE FULL ARTICLE
Kim-Ngan Hua, Lane Manning, Naveen Rawat, Victoria S. Ainsworth, Libin Liang, Madalina Furis, "Tuning exciton delocalization in organic crystalline thin films," Proc. SPIE 9939, Light Manipulating Organic Materials and Devices III, 993907 (23 September 2016);