Charge injection in metal/organic/metal structures with ZnO:Al/organic interface modified by Zn1-xMgxO:Al layer
PBN-AR
Instytucja
Instytut Fizyki Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
en
Czasopismo
ORGANIC ELECTRONICS
ISSN
1566-1199
EISSN
Wydawca
ELSEVIER SCIENCE BV
DOI
URL
Rok publikacji
2015
Numer zeszytu
Strony od-do
135-142
Numer tomu
25
Identyfikator DOI
Liczba arkuszy
Słowa kluczowe
en
Charge injection Zinc oxide Atomic layer deposition
Streszczenia
Język
en
Treść
Aluminum-doped zinc oxide (ZnO:Al, AZO) electrodes were covered with very thin (similar to 6 nm) Zn1-xMgxO:Al (AMZO) layers grown by atomic layer deposition. They were tested as hole blocking/electron injecting contacts to organic semiconductors. Depending on the ALD growth conditions, the magnesium content at the film surface varied from x = 0 to x = 0.6. Magnesium was present only at the ZnO:Al surface and subsurface regions and did not diffuse into deeper parts of the layer. The work function of the AZO/AMZO (x = 0.3) film was 3.4 eV (based on the ultraviolet photoelectron spectroscopy). To investigate carrier injection properties of such contacts, single layer organic structures with either pentacene or 2, 4-bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl] squaraine layers were prepared. Deposition of the AMZO layers with x = 0.3 resulted in a decrease of the reverse currents by 1-2 orders of magnitude and an improvement of the diode rectification. The AMZO layer improved hole blocking/electron injecting properties of the AZO electrodes. The analysis of the current-voltage characteristics by a differential approach revealed a richer injection and recombination mechanisms in the structures containing the additional AMZO layer. Among those mechanisms, monomolecular, bimolecular and superhigh injection were identified.
Cechy publikacji
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Original article
Original article presents the results of original research or experiment.
Inne
System-identifier
PBN-R:698756
CrossrefMetadata from Crossref logo
Cytowania
Liczba prac cytujących tę pracę
Brak danych
Referencje
Liczba prac cytowanych przez tę pracę
Brak danych