Efficiency enhancement of inverted polymer solar cells by doping NaYF4:Yb3+, Er3+ nanocomposites in PCDTBT:PCBM active layer

The role of phosphor nanoparticles in high efficiency organic solar cells

“…In addition, some functional materials were doped into TiO 2 buffer layer, such as metal NPs and some rare earth ions [13][14][15][16][17][18][19][20]. NaYF 4 :Yb 3+ ,Er 3+ NPs had been doped into active layer of solar cell and demonstrated a good effect for the performance improvement of OSCs especially the enhancement of short-circuit current density (J sc ) [21][22][23][24][25]. It could convert two or more low energy photons into one higher energy photon, which is a luminescence process named up-conversion (UC) effect.…”

The role of NaYF4nanoparticles in inverted polymer solar cells

“…Compared with inorganic solar cells, the disadvantage of limited light absorption and low charge carrier mobility within the thin film which leads to low PCE makes PSCs stay far away from commercial use. [10][11][12][13][14][15][16] Highly efficient solar cells require the absorption of photons over the broadest possible range of the solar spectrum followed by effective generation and collection of charge carriers. As a consequence, great efforts have been made to raise the PCE of PSCs.…”

Improving charge transport property and energy transfer with carbon quantum dots in inverted polymer solar cells

“…Detailed processes of devices preparation and measurement were carried out as described in our previous papers. [28][29][30] Photoinduced change in absorbance of active layers were investigated by femotosecond transient spectroscopy techniques. In each case, the active film is 100 nm thick and is deposited on ITO coated glass substrate.…”