Novel photovoltaic devices based on donor-acceptor molecular and conducting polymer systems

A Donor–Acceptor Polymer with a Peculiar Negative‐Charge‐“Trapping” Characteristic

“…[4,5] Important and promising results were attained with photovoltaic devices based on conducting polymer/fullerene [6±8] and polymer±donor/polymer±acceptor blends. [4,5,9] With the latter systems, photoconversion efficiencies of 1.9 % (1.5 AM1 (AM: air mass), 77 mW cm ±2 ) were achieved. [5] Therefore, it is of great importance to find electron-withdrawing polymers showing a high stability in the reduced state.…”

Bifunctional electroluminescent and photovoltaic devices using bathocuproine as electron-transporting material and an electron acceptor

“…An exciton is separated by mixing exciplex, creating electron in the A layer and holes in the D layer at the interface, respectively. The charges should be removed by transfer toward the opposite collection electrode [3,21]. According to the above argument, the EL and PV effects are proposed to associate with the exciplex formation, and this is another method to choose suitable material system to design a efficient EL and PV diode [8].…”

The contribution of coumarin 6 in light harvesting and photocurrent of P3HT:PCBM bulk heterojunction solar cell

“…Dye sensitization is a different strategy where a monolayer of a third material, usually an organic dye, is introduced between the donor and the acceptor to function as light absorber. A similar concept of an all-organic donor-absorber-acceptor structure was proposed by Yoshino et al [16]. A previous attempt for including a photosensitizer into P3HT:PCBM BHJ solar cells was done by Belcher et al [6] through incorporation of porphyrin dye into the solar cell blends for studying its contribution in light absorption and photocurrent of the cells.…”