Effect of Y doping on high-pressure behavior of Ag₂S nanocrystals

Abstract

The effect of the dopant Y on high-pressure-induced polymorph transformation was investigated in Ag2S nanocrystals.

Photovoltaic performance of long-chain poly(triphenylamine-phenothiazine) dyes with a tunable π-bridge for dye-sensitized solar cells

“…5. Note that PPAT4 has the largest degree of polymerization, so this result is possibly related to the adsorption capacity of the polymer on TiO 2 interface, but it is difficult to get a reliable adsorption data of 50 polymers, due to the complex molecular weight distribution of polymer, nevertheless, we will be added in our next work. Therefore, the photo-oxidized polymer dyes could be efficiently reduced by iodide ions.…”

“…The small semicircle in higher frequency range is attributed to charge transfer resistance (R ce ) at the counter electrolyte interface, while the larger semicircle in lower frequency reflect the recombination resistance (R rec ) at the 35 TiO 2 /dye/electrolyte interface. The electron 50 lifetimes calculated by fitting the equation τ r = R rec × CPE2 (CPE2, chemical capacitance) [25] are 18.0, 108.5, 46.8 and 7.4 ms for PAT, PPAT4, PPAT5 and PPAT6, respectively. While the diverse dyes adsorbed on the TiO 2 films cause the difference of R rec .…”

“…[7] Given the versatile optical and semiconductor 40 properties of conjugated polymers, it is possible that the properties of DSSC's could be improved by incorporating them into the cells as sensitizers. [8] Beak group reported a conjugated polymer (RCP-1) composed of a carbazole as electron donor and a side chain cyanoacetic acid as electron acceptor connected through conjugated vinylene and 50 terthiophene. synthesized a conjugated polymer dye (P2, DP: ~10) containing an electron donating backbone (triphenylamine) and an electron accepting side chain 45 (cyanoacetic acid) with conjugated thiophene units as the linkers and resulting a power conversion efficiency of 3.39%.…”

“…50 The synthesis routes of the monomers (M1-M4) and the polymers (PPAT4, PPAT5, and PPAT6) are shown in Scheme 1. 50 The synthesis routes of the monomers (M1-M4) and the polymers (PPAT4, PPAT5, and PPAT6) are shown in Scheme 1.…”

Recyclable Cu(II)‐Coordination Crosslinked Poly(benzimidazolyl pyridine)s as High‐Performance Polymers

“…[1][2][3][4][5][6][7][8][9][10] In the last several decades, much attention has been focused on developing various synthetic strategies for preparing polymers with good processability and improved mechanical properties. [7,[11][12][13][14][15] Among the examples reported, chemical crosslinking has been proved to be an effective manner to enhance the thermal stability and mechanical strength of polymers. [4,[16][17][18][19] Despite considerable effort, the availability of these chemical crosslinking polymers is limited to a certain extent for a variety of reasons, including poor solubility in common organic solvents, difficult to be remolded once cured, apt to leave contaminants in the environment, etc.…”