High Efficient Organic Solar Cells

Srikanth revoju subhayan biswas bertil eliasson ganesh d.

High efficient organic solar cells. The high efficiency in combination with the low cost of materials and processes are the selling points of this cell over commercial silicon or other organic and inorganic solar cells. Journal of materials chemistry a 2018 6 20 9613 9622. Combined with the flexibility of organic molecules organic solar cells are potentially cost effective for photovoltaic applications molecular engineering e g. High efficiency organic solar cells based on a small molecule donor and a low bandgap polymer acceptor with strong absorption.

The resulting devices exhibited outstanding power conversion efficiency of 16 1 for small area organic cells 0 04 cm2 and 14 4 for large area. The molecules used in organic solar cells are solution processable at high throughput and are cheap resulting in low production costs to fabricate a large volume. Changing the length and functional group of polymers can change the. Mushfika baishakhi upama md arafat mahmud gavin conibeer ashraf uddin trendsetters in high efficiency organic solar cells.

A non fullerene acceptor dty6 with long branched alkyl chains was synthesized and showed a power conversion efficiency pce of 16 1 when using a non halogen solvent. However the retention of high boiling point liquid additives affects the stability and lifetime of oscs necessitating the development of v journal of materials chemistry a hot papers. The team synthesized a non fullerene acceptor dty6 through side chain engineering and demonstrated its implementation in high efficiency small area organic solar cells and large area modules. V shaped electron acceptor btp 2br enables more effective in exciton dissociation at near zero homo offset over those of linear acceptor sn6 2br in organic solar cells with pbdt tf polymer herein yielding the power conversion efficiencies of 13 84 with low voltage loss of 0 46 v in opaque device and efficiency of 9 62 with an avt of 20 1 in semitransparent devices.

Efficiency and stability of organic solar cells oscs are two decisive factors for its future practical applications the first prerequisite for achieving efficient oscs is to harvest as much photon as possible by the active layer. Encouragingly the large area modules 18 cm2 exhibited an outstanding pce of 14 4 certified to be 13 98 by a third party accredited institute which is by far the highest module efficiency reported to date. The characteristic features of perovskite materials may enable further advancement of the pce beyond those afforded by the silicon solar cells toward the.