• Publications
  • Influence
Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
A low-cost, solution-processable solar cell, based on a highly crystalline perovskite absorber with intense visible to near-infrared absorptivity, that has a power conversion efficiency of 10.9% in a single-junction device under simulated full sunlight is reported.
Impedance spectroscopic analysis of lead iodide perovskite-sensitized solid-state solar cells.
The features in the IS responses that are attributed to the ionic and electronic transport properties of the perovskite material and manifest as a slow response at low frequency and an additional RC element at intermediate frequency are explored.
11% efficiency solid-state dye-sensitized solar cells with copper(II/I) hole transport materials
A record 11% stable solid-state dye-sensitized solar cell under standard air mass 1.5 global is reported using a hole-transport material composed of a blend of amorphous Cu(II/I) conductors that conduct holes by rapid hopping infiltrated in a 6.5 μm-thick mesoscopic TiO2 scaffold.
Dye-sensitized solar cells for efficient power generation under ambient lighting
A dye-sensitized solar cell that has been designed for efficient operation under indoor lighting could offer a convenient means for powering the Internet of Things.
Influence of the donor size in D-π-A organic dyes for dye-sensitized solar cells.
We report two new molecularly engineered push-pull dyes, i.e., YA421 and YA422, based on substituted quinoxaline as a π-conjugating linker and bulky-indoline moiety as donor and compared with
Lithium salts as "redox active" p-type dopants for organic semiconductors and their impact in solid-state dye-sensitized solar cells.
The doping mechanism consumes Li(+) during the device operation, which poses a problem, since the lithium salt is required at the dye-sensitized heterojunction to enhance charge generation, and highlights that new additives are required to maximize the performance and the long-term stability of ss-DSSCs.
Unravelling the mechanism of photoinduced charge transfer processes in lead iodide perovskite solar cells
Lead halide perovskites have recently been used as light absorbers in hybrid organic–inorganic solid-state solar cells, with efficiencies as high as 15% and open-circuit voltages of 1 V. However, a
Charge Density Dependent Mobility of Organic Hole‐Transporters and Mesoporous TiO2 Determined by Transient Mobility Spectroscopy: Implications to Dye‐Sensitized and Organic Solar Cells
Transient mobility spectroscopy (TMS) is presented as a new tool to probe the charge carrier mobility of commonly employed organic and inorganic semiconductors over the relevant range of charge
Charge migration and charge transfer in molecular systems
Important new insights into each of the elementary steps of charge transfer in liquids and nanoparticles, obtained from state-of-the-art ultrafast spectroscopy and/or theoretical methods, are summarized in this review.
Blue-Coloured Highly Efficient Dye-Sensitized Solar Cells by Implementing the Diketopyrrolopyrrole Chromophore
A series of four diketopyrrolopyrrole (DPP)-based sensitizers utilizing the donor-chromophore-anchor (D-C-A) motif were investigated computationally, spectroscopically, and fabricated by systematic evaluation of finished photovoltaic cells, yielding the first example of a high-performance blue DSC.