Crystallization-Induced Charge-Transfer Change in TiOPc Thin Films Revealed by Resonant Photoemission Spectroscopy

2011 ◽  
Vol 115 (30) ◽  
pp. 14969-14977 ◽  
Author(s):  
Shun Yu ◽  
Sareh Ahmadi ◽  
Chenghua Sun ◽  
Karina Schulte ◽  
Annette Pietzsch ◽  
...  
Keyword(s):  
Thin Films ◽  
Charge Transfer ◽  
Photoemission Spectroscopy ◽  
Resonant Photoemission ◽  
Induced Charge

Carrier Compensation Mechanism of Highly Conductive Anatase Ti0.94Nb0.06O2 Epitaxial Thin Films

2008 ◽  
Vol 1074 ◽  
Author(s):  
Hiroyuki Nogawa ◽  
Taro Hitosugi ◽  
Hideyuki Kamisaka ◽  
Kouichi Yamashita ◽  
Akira Chikamatsu ◽  
...  
Keyword(s):  
Thin Films ◽  
Photoemission Spectroscopy ◽  
Epitaxial Thin Films ◽  
Interstitial Oxygen ◽  
Acceptor State ◽  
Deep Acceptor ◽  
Resonant Photoemission ◽  
Post Annealing ◽  
Oxygen Defects ◽  
Electron Carriers

ABSTRACTWe investigated electrical conduction of anatase Ti0.94Nb0.06O2 (TNO) epitaxial thin films in relation to oxygen defects generated by post-annealing. Annealing of TNO in oxygen was found to cause dramatic decreases in ne. Resonant photoemission spectroscopy measurements revealed that a deep acceptor state just above the top of valence band evolves, synchronized with the decrease of ne. We proposed that the acceptor state originates from interstitial oxygen atoms combined with Nb dopants and compensates electron carriers.

scholarly journals Structure–charge transfer property relationship in self-assembled discotic liquid-crystalline donor–acceptor dyad and triad thin films

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 57811-57819 ◽  
Author(s):  
Kwang Jin Lee ◽  
Jae Heun Woo ◽  
Yiming Xiao ◽  
Eunsun Kim ◽  
Leszek Mateusz Mazur ◽  
...  
Keyword(s):  
Thin Films ◽  
Charge Transfer ◽  
Structural Properties ◽  
Liquid Crystalline ◽  
Transfer Property ◽  
Property Relationship ◽  
Donor Acceptor ◽  
Induced Charge ◽  
Self Assembled

Dynamics of the photo-induced charge transfer are correlated with the structural properties of self-assembled discotic donor–acceptor dyad and triad films.

Cooperative Absorption-Induced Charge Transfer in a Solid

1990 ◽  
Author(s):  
Isidore Last ◽  
Thomas F. George
Keyword(s):  
Charge Transfer ◽  
Induced Charge

scholarly journals An In-Situ Reaction Route to Molecular Level Dispersed Bisimide and ZnO Nanorod Hybrids with Efficient Photo-Induced Charge Transfer

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Chunzheng Lv ◽  
Lirong He ◽  
Jiahong Tang ◽  
Feng Yang ◽  
Chuhong Zhang
Keyword(s):  
Charge Transfer ◽  
Electric Field ◽  
Self Assembly ◽  
Molecular Level ◽  
Surface Photovoltage ◽  
Zno Nanorod ◽  
In Situ Reaction ◽  
Perylene Bisimide ◽  
Induced Charge

AbstractAs an important photoconductive hybrid material, perylene/ZnO has attracted tremendous attention for photovoltaic-related applications, but generally faces a great challenge to design molecular level dispersed perylenes/ZnO nanohybrids due to easy phase separation between perylenes and ZnO nanocrystals. In this work, we reported an in-situ reaction method to prepare molecular level dispersed H-aggregates of perylene bisimide/ZnO nanorod hybrids. Surface photovoltage and electric field-induced surface photovoltage spectrum show that the photovoltage intensities of nanorod hybrids increased dramatically for 100 times compared with that of pristine perylene bisimide. The enhancement of photovoltage intensities resulting from two aspects: (1) the photo-generated electrons transfer from perylene bisimide to ZnO nanorod due to the electric field formed on the interface of perylene bisimide/ZnO; (2) the H-aggregates of perylene bisimide in ZnO nanorod composites, which is beneficial for photo-generated charge separation and transportation. The introduction of ordered self-assembly thiol-functionalized perylene-3,4,9,10-tetracarboxylic diimide (T-PTCDI)/ ZnO nanorod composites induces a significant improvement in incident photo-to-electron conversion efficiency. This work provides a novel mentality to boost photo-induced charge transfer efficiency, which brings new inspiration for the preparation of the highly efficient solar cell.

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