US 11,871,648 B2
Organic photomultiplication photodetector with bi-directional bias response and method for producing same
Linlin Shi, Taiyuan (CN); Yanxia Cui, Taiyuan (CN); Guohui Li, Taiyuan (CN); Ye Zhang, Taiyuan (CN); Wenyan Wang, Taiyuan (CN); and Ting Ji, Taiyuan (CN)
Assigned to Taiyuan University of Technology, Taiyuan (CN)
Filed by Taiyuan University of Technology, Taiyuan (CN)
Filed on Dec. 6, 2021, as Appl. No. 17/542,999.
Claims priority of application No. 202110293648.2 (CN), filed on Mar. 19, 2021.
Prior Publication US 2022/0093866 A1, Mar. 24, 2022
Int. Cl. H10K 71/12 (2023.01); H10K 85/10 (2023.01); H10K 30/81 (2023.01); H10K 102/10 (2023.01)
CPC H10K 85/1135 (2023.02) [H10K 30/81 (2023.02); H10K 71/12 (2023.02); H10K 2102/103 (2023.02)] 5 Claims
OG exemplary drawing
 
1. A method for preparing an organic photomultiplication photodetector, the organic photomultiplication photodetector comprising:
an anode layer;
an anode modification layer;
an interfacial modification layer made of aluminum oxide (Al2O3);
an active layer; and
a cathode layer;
the method comprising:
(S1) preparing a solution of the active layer;
(S2) cleaning an indium tin oxide (ITO) glass substrate followed by processing with a plasma cleaner to be used as the anode layer; and applying a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer on the anode layer by spin-coating as the anode modification layer;
(S3) depositing Al2O3 on the anode modification layer by atomic layer deposition (ALD) to obtain an Al2O3 film as the interfacial modification layer;
(S4) applying a poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl-C70-butyric acid methyl ester (P3HT:PC70BM) layer on the interfacial modification layer by spin coating as the active layer; and
(S5) depositing a layer of aluminum, silver or gold on the active layer by thermal evaporation as the cathode layer.