Electronic Structure of C60/Zinc Phthalocyanine/V2O5 Interfaces Studied Using Photoemission Spectroscopy for Organic Photovoltaic Applications

Lim, Chang Jin; Park, Min-Gyu; Kim, Min Su; Han, Jeong Hwa; Cho, Soo-Haeng; Cho, Mann Ho; Yi, Yeonjin; Lee, Hyunbok; Cho, Sang Wan

doi:10.3390/molecules23020449

Cited by 12 publications

(8 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As an important transition-metal-based semiconductor, vanadium pentoxide (V 2 O 5 ) has been widely utilized in gas sensors, lithium ion batteries, photovoltaic devices, and photocatalysis. − Particularly, V 2 O 5 is a representative narrow-band semiconductor (∼2.3 eV) that can efficiently capture visible light. Moreover, V 2 O 5 possesses band edges ( E VB = 2.73 eV, E CB = 0.47 eV), which match well with those of CN ( E VB = 1.5 eV, E CB = −1.2 eV) for forming a heterojunction.…”

Section: Introductionmentioning

confidence: 99%

Construction of a Novel Z-Scheme Heterojunction with Molecular Grafted Carbon Nitride Nanosheets and V₂O₅ for Highly Efficient Photocatalysis

et al. 2019

View full text Add to dashboard Cite

Molecular grafted carbon nitride (CN) nanosheets coupled with V 2 O 5 to form a novel Z-scheme heterojunction photocatalyst V 2 O 5 /CNX (X is 2-aminobenzonitrile) by a facile in situ growth method was acquired. Its photocatalytic properties were investigated by hydrogen evolution and degradation of rhodamine B under simulated sunlight irradiation. It was found that the assembled heterojunction could remarkably enhance photocatalytic activity in contrast to pure CN, V 2 O 5 , and previous reported heterojunctions. The great improvement of photocatalytic activity can be attributed to molecular grafting and the formation of the Z-scheme heterojunction, resulting in a remarkable red shift of the optical absorption, a rapid separation of charge carriers, an increase of specific surface area, and introduction of defects. Moreover, exfoliation of bulk CNX into ultrathin nanosheets increases mobility of charges and specific surface area. Different wt % ratios of V 2 O 5 -loaded heterojunctions were prepared, and 2% of V 2 O 5 -loaded heterojunctions were found to display optimal catalytic efficiency. The possible activity enhanced mechanism was proposed. This work reveals that the molecular grafted V 2 O 5 /CNX Z-scheme heterojunction can be utilized for highly efficient photocatalysis applied in energy conversion and environmental remediation.

show abstract

Section: Introductionmentioning

confidence: 99%

Construction of a Novel Z-Scheme Heterojunction with Molecular Grafted Carbon Nitride Nanosheets and V₂O₅ for Highly Efficient Photocatalysis

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The cause is in the processability and/or some unique characteristics of some agents. In addition to perylene-based dyes which are to be small molecule acceptors in organic photovoltaics (OPV) heterostructures, phthalocyanines are explored as small molecule donor materials [1][2][3][4][5] and organicinorganic interfaces [6][7][8][9]. Phthalocyanines are also c ○ YU.V.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Functional Analysis of Electronic Properties of Transition-Metal Phthalocyanines

Klysko

Syrotyuk

2021

Ukr. J. Phys.

View full text Add to dashboard Cite

This work presents the ab initio study of transition-metal phthalocyanines within a PBE0 hybrid functional. The list of metal impurities includes manganese, iron, cobalt, nickel, copper, and zinc. All calculations of isolated molecules have been performed with the use of the projector augment-wave method. For iron phthalocyanine, we have performed four calculations with different values of the mixing parameter a (the value of the exact exchange) – 0, 1/4, 1/3, and 1/2. For all other molecules, the calculations have been performed for a = 1/4 and 1/3. The electronic structure parameters including the HOMO-LUMO energy gap, Fermi level, magnetization, and imaginary part of the dielectric function are presented and compared with available theoretical and experimental data. Manganese, iron, and cobalt phthalocyanines show a strong dependence of electronic properties on the value of the exact exchange interaction. In other molecules with nickel, copper, and zinc, this dependence is not significant.

show abstract

“…Warner et al also evaluated the nanostructure in copper phthalocyanine-C 60 solar cell blends. Their solar cell's optimal efficiency could be improved by an alternative film growth procedure [32][33][34]. In this study, CH 3 NH 3 PbI 3 perovskite solar cells have been prepared using CZTSe as a hole-transport layer.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Thin-Film Solar Cells with Ag/C60/MAPbI3/CZTSe/Mo/FTO Multilayered Structures

et al. 2021

View full text Add to dashboard Cite

New solar cells with Ag/C60/MAPbI3/Cu2ZnSnSe4 (CZTSe)/Mo/FTO multilayered structures on glass substrates have been prepared and investigated in this study. The electron-transport layer, active photovoltaic layer, and hole-transport layer were made of C60, CH3NH3PbI3 (MAPbI3) perovskite, and CZTSe, respectively. The CZTSe hole-transport layers were deposited by magnetic sputtering, with the various thermal annealing temperatures at 300 °C, 400 °C, and 500 °C, and the film thickness was also varied at 50~300 nm The active photovoltaic MAPbI3 films were prepared using a two-step spin-coating method on the CZTSe hole-transport layers. It has been revealed that the crystalline structure and domain size of the MAPbI3 perovskite films could be substantially improved. Finally, n-type C60 was vacuum-evaporated to be the electronic transport layer. The 50 nm C60 thin film, in conjunction with 100 nm Ag electrode layer, provided adequate electron current transport in the multilayered structures. The solar cell current density–voltage characteristics were evaluated and compared with the thin-film microstructures. The photo-electronic power-conversion efficiency could be improved to 14.2% when the annealing temperature was 500 °C and the film thickness was 200 nm. The thin-film solar cell characteristics of open-circuit voltage, short-circuit current density, fill factor, series-resistance, and Pmax were found to be 1.07 V, 19.69 mA/cm2, 67.39%, 18.5 Ω and 1.42 mW, respectively.

show abstract

Electronic Structure of C60/Zinc Phthalocyanine/V2O5 Interfaces Studied Using Photoemission Spectroscopy for Organic Photovoltaic Applications

Cited by 12 publications

References 28 publications

Construction of a Novel Z-Scheme Heterojunction with Molecular Grafted Carbon Nitride Nanosheets and V₂O₅ for Highly Efficient Photocatalysis

Construction of a Novel Z-Scheme Heterojunction with Molecular Grafted Carbon Nitride Nanosheets and V₂O₅ for Highly Efficient Photocatalysis

Hybrid Functional Analysis of Electronic Properties of Transition-Metal Phthalocyanines

Preparation and Characterization of Thin-Film Solar Cells with Ag/C60/MAPbI3/CZTSe/Mo/FTO Multilayered Structures

Contact Info

Product

Resources

About

Electronic Structure of C60/Zinc Phthalocyanine/V2O5 Interfaces Studied Using Photoemission Spectroscopy for Organic Photovoltaic Applications

Cited by 12 publications

References 28 publications

Construction of a Novel Z-Scheme Heterojunction with Molecular Grafted Carbon Nitride Nanosheets and V2O5 for Highly Efficient Photocatalysis

Construction of a Novel Z-Scheme Heterojunction with Molecular Grafted Carbon Nitride Nanosheets and V2O5 for Highly Efficient Photocatalysis

Hybrid Functional Analysis of Electronic Properties of Transition-Metal Phthalocyanines

Preparation and Characterization of Thin-Film Solar Cells with Ag/C60/MAPbI3/CZTSe/Mo/FTO Multilayered Structures

Contact Info

Product

Resources

About

Construction of a Novel Z-Scheme Heterojunction with Molecular Grafted Carbon Nitride Nanosheets and V₂O₅ for Highly Efficient Photocatalysis

Construction of a Novel Z-Scheme Heterojunction with Molecular Grafted Carbon Nitride Nanosheets and V₂O₅ for Highly Efficient Photocatalysis