Over 16% efficiency from thick-film organic solar cells

Understanding the Work Function Modification by a Self‐assembled Polyvinylpyrrolidone Layer in Inverted Organic Solar Cells

“…As a result, apart from the active material, the interface layer between the active layer and the electrodes that plays a significant role in OSC structure should also be optimized. [10][11][12][13][14] Compared to the conventional OSC (C-OSC) device architecture, where the bottom contact is the anode consisting of a hole transport layer poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) covering an indium tin oxide (ITO) film, the inverted device architecture, which has the cathode as the bottom electrode, is a more attractive approach. The advantage of the inverted device structure is stability (both anode and cathode contacts).…”

Isomeric Effect of Wide Bandgap Polymer Donors with High Crystallinity to Achieve Efficient Polymer Solar Cells

“…[ 8–15 ] Comparing with fullerene derivatives acceptors, NFAs possess several advantages including easy tunability of chemical structure, high absorption coefficient, and low energy loss in given devices. [ 16–23 ]…”

“…[8][9][10][11][12][13][14][15] Comparing with fullerene derivatives acceptors, NFAs possess several advantages including easy tunability of chemical structure, high absorption coefficient, and low energy loss in given devices. [16][17][18][19][20][21][22][23] As one of the two key components for a bulk-heterojunction (BHJ) blend, donor materials are equally critical in improving device performance of NFAs-based PSCs. Therefore, developing novel wide bandgap (WBG) polymer donors to match well with different NFAs becomes an effective strategy.…”

A History and Perspective of Non‐Fullerene Electron Acceptors for Organic Solar Cells

“…While significantly reduced NGR has been reported in fullerene-based systems, [225][226][227][228] only the emergence of NFAs has really pushed PCEs toward 20%, with some NFA systems even delivering respectable efficiencies in the thickjunction limit. [231] That said, to date there are only few papers studying the efficiency and mechanism of (reduced) NGR in NFA blends. Perdigón-Toro et al have shown that free charge generation in state-of-the-art PM6:Y6 solar cells is essentially barrier-less with near-unity efficiency η d,CT ≈ 1.…”