The photovoltaic effect in a heterojunction of molybdenyl phthalocyanine and perylene dye

On doubts about Mott–Schottky plot of organic planar heterojunction in photovoltaic cell

“…A thin layer of Tc between PBrPc and Au should not limit the flow of holes from PBrPc to Au since it can be expected that the hole transporting levels of Tc and PBrPc coincide with each other. Therefore, Tc can be applied as a buffer layer between PBrPc which exhibits p-type electric transport, and Au in photovoltaic cells with organic heterojunction [16,17]. The average deposition rate of organic materials was equal to 0.5 Å/s.…”

Acceptor Energy Level Control of Charge Photogeneration in Organic Donor/Acceptor Blends

“…Perylenes are attractive model electron acceptors for studies of charge photogeneration in donor/acceptor blends as their energetics can be readily modified by chemical substituents and they exhibit a well-defined and high-oscillator-strength anion absorption band (extinction coefficient ε ≈ 80 000 M −1 cm −1 compared to that of P3HT ∼20 000 M −1 cm −1 ). They have, moreover, already received significant attention for applications in dye-sensitized and vacuum-deposited solar cells, − although their performance in organic polymer/perylene blend devices has been relatively poor to date, a result that has typically been attributed to unfavorable nanomorphologies for charge transport to the device electrodes. We have previously reported a comparison of charge photogeneration between polythiophene:PCBM blend films and the same polythiophenes blended with one perylene diimide electron acceptor (PDI 2 in Chart ).…”

On photovoltaic effect in hybrid heterojunction formed from palladium phthalocyanine and titanium dioxide layers

“…where kT/e is the thermal potential, the m and a parameters depend on the heterojunction model, then the recombination via trapping states leads to m > 1 [31,32]. In our case Eq.…”