caa a22 4500 477059279 CHVBK 20180405111355.0 cr unu---uuuuu 170330e19960701xx s 000 0 eng 10.1007/BF02439092 doi (NATIONALLICENCE)springer-10.1007/BF02439092 Photoelectric characteristics of photodetectors based on a GaAs/CuPc heterojunction [Elektronische Daten] [S. Korneichuk, M. Fedorov] A study is made of the volt-ampere, volt-farad, and spectral characteristics of photodetectors based on an n-GaAs/p-CuPc heterojunction. When exposed to white light (E=600 W/m2) through Ag, the elements Cu/GaAs/CuPc/Ag have the following characteristics: Uxx=0.6 V; Isc=30.2 A/m2, FF=0.49. Based on this data and with allowance for the transmission factor (τ=7%), η=18%. Quantum efficiency is 0.5 el./phot. in the UV-region at λ1 = 300 nm, while α2 = 0.85 el./phot. in the visible region at λ2 = 800 nm. The limiting sensitivity of the photodetector is 10−11 W. The following was determined from the volt-farad and spectral characteristics: Cb=8.6·10−4 F/m2; barrier width w1=16nm in CuPc and w2=34 nm in CaAs; exciton diffusion length L1=2.5 nm and L2=7.5 nm, respectively. The photodetectors undergo almost no degradation. The values of Uxx and Isc remain constant with multiple exposures to UV-light of 140 W/m2 intensity over 6 h at constant temperature. The sensitivity region of the photodetectors is from 200 to 1000 nm. It is found that an anisotropic heterojunction in the form of two series-connected Schottky barriers is created at the boundary between n-GaAs and oxygen-doped p-CuPc in the presence of charged surface states at the interface. Plenum Publishing Corporation, 1997 Korneichuk S. aut Fedorov M. aut Russian Physics Journal Kluwer Academic Publishers-Consultants Bureau 39/7(1996-07-01), 634-637 1064-8887 39:7<634 1996 39 11182 https://doi.org/10.1007/BF02439092 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02439092 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Korneichuk S. aut NATIONALLICENCE 700 1- Fedorov M. aut NATIONALLICENCE 773 0- Russian Physics Journal Kluwer Academic Publishers-Consultants Bureau 39/7(1996-07-01), 634-637 1064-8887 39:7<634 1996 39 11182 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer