Inorganic bulk heterojunction solar cells

How are bulk heterojunction solar cells fabricated?

Here, we report bulk heterojunction solar cells based on one-dimensional structures, fabricated by mixing CdS nanowires (CdS NWs) and single-walled carbon nanotubes (CNTs) to form a composite film with mutually interpenetrating networks through a simple solution-filtration process.

What are solution-processed inorganic solar cells?

Solution-processed inorganic solar cells based on colloidal quantum dots and nanocrystals have attracted a great deal of interest, largely because of their potential in panchromatic solar harnessing and the low fabrication costs associated with solution processing 1, 2, 3, 4.

Are bulk nano-heterojunction solar cells better than bilayer analogues?

We present bulk nano-heterojunction solar cells based on n-type Bi 2 S 3 nanocrystals and p-type PbS quantum dots, which demonstrate a more than a threefold improvement in device performance compared to their bilayer analogue, as a result of suppressed recombination.

What are solution-processed inorganic thin-film solar cells?

Solution-processed inorganic thin-film solar cells consist of either nanocrystalline bulk semiconductors based on CdTe 5, copper indium gallium selenide (CIGS) 6 or copper zinc tin sulphide (CZTS) 7, or nanocrystalline quantum-confined systems based on Pb (S,Se) 1, 2, 3, 4, 8, 9 and Cd (Se,S,Te) 10 quantum dots.

Can a quantum dot solar cell be a bulk nano-heterojunction?

Quantum dot solar cell architectures developed to date have relied on the use of bulk-like thin films of colloidal quantum dots. Here, we introduce the bulk nano-heterojunction concept for inorganic solution-processed semiconductors.

Are bulk heterojunction devices better than bilayer devices?

The bulk heterojunction devices yield a short-circuit current density Jsc in excess of 24 mA cm −2, an over threefold improvement over the bilayer devices. The resultant PCE of the best-performing bulk heterojunction device is as high as 4.87%.