Organic tandem Schottky junction cells with high open circuit voltage

Travkin, Vlad V.; Stuzhin, Pavel A.; Охапкин, А. И.; Korolyov, S. A.; Pakhomov, Georgy L.

doi:10.1016/j.synthmet.2015.12.002

Cited by 10 publications

(21 citation statements)

References 27 publications

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“…All experimental techniques were described earlier . A 3 nm thick MoO x layer was deposited on an ITO anode (substrate = polyethylene terephthalate, PET) to improve the hole transport . Then, CuI and C 60 layers were sequentially evaporated – Fig.…”

Section: Methodsmentioning

confidence: 99%

CuI-based hybrid junction in photovoltaic devices with semitransparent cathode

Travkin

Yunin

Luk’yanov

et al. 2017

Phys. Status Solidi A

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Phone: þ78 314 179 473, Fax: þ78 314 17 464A hybrid inorganic/organic heterojunction formed by p-type cuprous iodide CuI and n-type fullerene C 60 was employed in the archetypal photovoltaic devices. The thickness of the p-CuI layer deposited on a molybdenum oxide (MoO x ) anode buffer was optimized to achieve a higher efficiency, while the thickness of the n-C 60 photoabsorber layer was fixed. In an attempt to obtain semitransparent devices, a trilayer MoO x / metal/MoO x cathode with a BCP underlayer was applied (metal ¼ Ag or Mg, BCP ¼ bathocuproine). The maximum photovoltage of such devices on a PET/ITO substrate was equal to 0.75 V for an average transparency of about 35% over the range of 380-1000 nm. Similar devices having a nontransparent Al cathode in conjunction with an Alq3 underlayer generate photovoltage of 0.82 V (Alq3 ¼ tris-8-hydroxyquinolinato-aluminum), which shows the important effect of hybrid junctions in multilayer organic-based devices. Original Paper 1700186 (4 of 5) V. V. Travkin et al.: CuI-based hybrid junction in photovoltaic devices ß

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Section: Methodsmentioning

confidence: 99%

CuI-based hybrid junction in photovoltaic devices with semitransparent cathode

Travkin

Yunin

Luk’yanov

et al. 2017

Phys. Status Solidi A

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“…The rectification in the darkness is usually poor, most likely due to compensating (unwanted) contribution of the interactive 'acceptor/Al' junction. [1][2][3]18,19] Under illumination of 100 mW/cm 2 , a photovoltaic effect arises (Figure 2(a-d)), the corresponding parameters are summarized in Table 1. Significant photovoltage generated by the molecular heterojunction can be expected from the large difference between HOMO energy of donor (SubPcH 12 ) and LUMO energy of acceptor (see Figure 1).…”

Section: Resultsmentioning

confidence: 99%

“…As known, an exciton-blocking material should carefully be adapted for the specific acceptor/cathode pair to avoid substantial energy losses at the interface. [1][2][3]6,8,18,19,22] An indirect argument for this is the lack of correlation between the value of U oc (Table 1) and the LUMO position in acceptor (Figure 1). This is illustrated in Figure 2(f).…”

Section: Resultsmentioning

confidence: 99%

“…[13,14] The preparation of the archetypal photovoltaic cell was similar to that previously reported. [18,19] The cell scheme was 'glass/ ITO/MoO x /SubPcH 12 /acceptor/Al', where MoO x is a 10 nm substoichiometric molybdenum trioxide layer (buffer/workfunction modifier, [1,[5][6][7][8]19] see Figure S1), acceptor = SubPzS 3 F 0 , SubPzS 2 F 4 , SubPzS 1 F 8 , SubPcF 12 (or C 60 , see text), and Al is an aluminum top cathode (40 nm). The thickness of a p-type layer (SubPcH 12 ) was 20 nm, the thickness of an n-type (acceptor) layer was 30 nm.…”

Section: Methodsmentioning

confidence: 99%

“…The thickness of a p-type layer (SubPcH 12 ) was 20 nm, the thickness of an n-type (acceptor) layer was 30 nm. All functional layers were obtained by the thermal evaporation technique, [15,16,18,19] the standard Aldrich ITO-coated glass slides were used as substrates. (Photo-)electrical characterization of the cells with an active area of 0.16 cm 2 was carried out in an inert atmosphere (argon) at the room temperature using a Zolix SS150 solar simulator and a Keithley 4200 SCS parameter analyzer.…”

Section: Methodsmentioning

confidence: 99%

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Thiadiazole Fused Subporphyrazines as Acceptors in Organic Photovoltaic Cells

Pakhomov¹,

Travkin²,

Hamdoush³

et al. 2017

MHC

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A series of archetypal photovoltaic cells with a fully-subporphyrinoid planar heterojunction was fabricated by the thermal vacuum evaporation technique. The donor component of this junction wasКлючевые слова: Субфталоцианины, перфторированные и 1,2,5-тиадиазол-аннелированные аналоги, субпорфиразины, тонкие плёнки, молекулярные гетеропереходы, фотовольтаические ячейки.

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The Effect of Metal in MoOx/Metal/MoOx Anode on Open Circuit Voltage in Organic Photovoltaic Cells

Pakhomov

Travkin

Luk’yanov

et al. 2018

Physica Status Solidi (a)

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Archetypal photovoltaic cells are fabricated in order to elucidate the effect of a metal embedded in a semitransparent trilayer electrode on photovoltage. A series of electrodes are formed by thermal deposition of MoO x , metal and MoO x layers, in said succession (MoO x ¼ substoichometric molybdenum trioxide, metal ¼ Au, Cu, Ag, Al, In, Mg, Yb). The parameters of the Schottkytype cells consisting of thus made bottom anode, a subphthalocyanine boron chloride (SubPc) photoabsorber and a bilayer LiF/Al top cathode are measured and compared to those of the reference cell with an ITO/MoO x anode. Photovoltage does not correlate with the work function of a metal in the anode, while the photocurrent is inversely proportional to the anode sheet resistance. The highest efficiency is achieved with the silver interlayer, but the reference cell with ITO outperforms any cell with a trilayer anode. Then, comparison is made with a series of cells, in which the metal (Cr, Ni, Ag, Al, and Ta) in anode is deposited by a dc magnetron sputtering. In these cells, the photovoltage rises monotonically with the metal work function. Magnetron sputtered nickel in the anode provides the best cell performance, closely approaching that of the reference cell.

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Organic tandem Schottky junction cells with high open circuit voltage

Cited by 10 publications

References 27 publications

CuI-based hybrid junction in photovoltaic devices with semitransparent cathode

CuI-based hybrid junction in photovoltaic devices with semitransparent cathode

Thiadiazole Fused Subporphyrazines as Acceptors in Organic Photovoltaic Cells

The Effect of Metal in MoOx/Metal/MoOx Anode on Open Circuit Voltage in Organic Photovoltaic Cells

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