Trap States of Tris-8-(Hydroxyquinoline)Aluminum Degraded by Blue Laser Using Thermally Stimulated Current Method

Hashimoto, Yuichi; Kawai, Tatsundo; Takada, Masamitsu; Maeta, Shigeyoshi; Hamagaki, Manabu; Sakakibara, T.

doi:10.1143/jjap.42.5672

Cited by 5 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gap states and their distribution in Alq 3 have been studied by different methods. 21,27,28 The faster decay of EQE under 700 nm possibly indicates that gap states 2 are less than gap states 1, as schematically shown in the inset of Fig. 4.…”

Section: Resultsmentioning

confidence: 95%

Long-range exciton dissociation in layered organic solar cells

Song

Yang

2009

Journal of Renewable and Sustainable Energy

View full text Add to dashboard Cite

Long-range charge transfer in a donor-spacer-acceptor system is observed. When tris-8-hydroxy-quinolinato aluminum ͑Alq 3 ͒ is used as a spacer between copper phthalocyanine ͑CuPc, donor͒ and C 60 ͑acceptor͒, electron transfer over 14 nm from CuPc to C 60 and hole transfer over 30 nm from C 60 to CuPc occur. Two charge transfer mechanisms are identified by this study: electron tunneling via gap states of Alq 3 ͑the lowest unoccupied molecular orbitals of Alq 3 act as an energy barrier͒ and hole transport via the highest occupied molecular orbitals of Alq 3 , which act as step-stone levels. A thin spacer with suitable energy levels is suggested to improve the power conversion efficiency by inhibiting the recombination of geminate pair polarons.

show abstract

Section: Resultsmentioning

confidence: 95%

Long-range exciton dissociation in layered organic solar cells

Song

Yang

2009

Journal of Renewable and Sustainable Energy

View full text Add to dashboard Cite

show abstract

“…In the field of organic materials and polymers, the presence of defects or traps influences strongly the transport of charge carriers through the materials, and hence the performances of devices using them as an active layer. Despite intensive investigations on electrical and optical properties of different materials [1][2][3][4][5][6], the formation process of defects in organic semiconductors is still not very well understood. In fact, there are two possibilities for creating defects in organic materials.…”

Section: Introductionmentioning

confidence: 99%

Study of traps in polydiacetylene based devices using TSC technique

Renaud

Huang

Zemmouri

et al. 2006

Eur. Phys. J. Appl. Phys.

View full text Add to dashboard Cite

International audienceTrap parameters in poly(1-(3,4-difluorophenyl)-2-(4-pentylcyclohexylphenyl)acetylene) (PDPA-2F) based devices have been investigated by using the thermally stimulated current (TSC) technique. The device structure is ITO-PEDOT-(PDPA-2F)-M, where M stands for the cathode metal (Al, Ca/Al, and Au). The results reveal at least three TSC peaks in devices denoted as peaks A, B and C. Comparing trap parameters in ITO-PEDOT-(PDPA-2F)-Au hole-only device and ITO-PEDOT-(PDPA-2F)-Ca Al (Al) bipolar devices, we assigned A and B trap types to hole-like traps and C type traps to electron-like traps. The trap densities are in the range of 10(15)-10(17) cm(-3) and the trap levels are 0.12 eV (A type traps), 0.36 eV (B type traps), and 0.25 eV (C type traps)

show abstract