Constructing Post‐Permeation Method to Fabricate Polymer/Nanocrystals Hybrid Solar Cells with PCE Exceeding 6%

Abstract

A post-permeation method is constructed for fabricating bulk-heterojunction hybrid solar cells. Porous CdTe film is prepared by annealing the mixture solution of aqueous CdTe nanocrystals and cetyltrimethyl ammonium bromide, after which the post-permeation of polymer is employed. By this method, kinds of polymers can be applied regardless of the intermiscibility with the nanoparticles. The inorganic nanocrystals and the polymer can be treated under respective optimized annealing temperatures, which can facilitate the growth of nanocrystals without damaging the polymers. A high power conversion efficiency of 6.36% in the polymer/nanocrystals hybrid solar cells is obtained via systematical optimization.

Hybrid Photovoltaics – from Fundamentals towards Application

“…[107] Recently, polymer:nanocrystals hybrid solar cells with power conversion efficiencies exceeding 6% were published by Du et al based on CdTe. [108] Cetyl trimethylammonium bromide (CTAB) and aqueous CdTe nanocrystals were mixed in solution and annealed to obtain porous CdTe films, which were infiltrated by different polymers such as P3HT and poly[ [4,8- [3,4-b]thiophenediyl]] (PTB7). Due to the backfilling approach, the inorganic nanocrystals and the polymer were treated under respective optimized annealing temperatures, which facilitated the growth of nanocrystals without damaging the polymers.…”

“…The champion device reached an efficiency of 6.36% after a systematical optimization. [108] When using alternative inorganic materials, which are well performing in conventional solar cells, in a nanocomposite hybrid solar approach, such as for example Si, not as high device efficiencies had been reported so far. For example, Niesar et al combined microwave-plasma synthesized of Si nanocrystals with P3HT in hybrid solar cells.…”

“…The thickness of different active layers was carefully adjusted by using device structures with an additional nanocrystal layer between the hole blocking layer and the active layer . Recently, polymer:nanocrystals hybrid solar cells with power conversion efficiencies exceeding 6% were published by Du et al based on CdTe . Cetyl trimethylammonium bromide (CTAB) and aqueous CdTe nanocrystals were mixed in solution and annealed to obtain porous CdTe films, which were infiltrated by different polymers such as P3HT and poly[[4,8‐bis[(2‐ethylhexyl)oxy]benzo[1,2‐b:4,5‐b′]dithiophene‐2,6‐diyl][3‐fluoro‐2‐[(2‐ethylhexyl)carbonyl]thieno[3,4‐b]thiophenediyl]] (PTB7).…”

Effect of boundary chain folding on thermal conductivity of lamellar amorphous polyethylene

“…Recent studies suggest that polymers have great potential applications in many elds, such as thermoelectrics, 1,2 solar cells, 3,4 light-emitting diodes, 5 biomedical devices, 6 nonlinear optical devices, 7,8 and electronic packaging. 9 As the most commonly used material for electronic packaging, the heat transfer capability of a polymer lm directly determines the heat dissipation and operating performance of the electronic device.…”

Green-solvent-processed hybrid solar cells based on donor–acceptor conjugated polyelectrolyte

“…For example, Yang's group developed an effective method to form conjugated polymers by spincoating and thermal annealing the aqueous precursors. [15][16][17][18][19][20] Nevertheless, this method requires a long time annealing process to realize the polymerization. And the thermally cleavable side sites limited the choice of polymer precursors in certain types of units.…”