Bulk Heterojunction Solar Cells

The bulk heterojunction bhj structure composed of the physical blend of donor and acceptor photovoltaic materials has been commonly used in polymer solar cells and demonstrated to be the most effective strategy for obtaining high performance devices due to phase separation of donor and acceptor photovoltaic materials and the subsequent.

Bulk heterojunction solar cells.

While the first devices had to be stored in an inert atmosphere and degraded quickly on exposure to sunlight today small organic pv modules on flexible substrates with operational lifetimes of a few years are available. The journal of physical chemistry c 2015 119 36 20871 20879. Photovoltaic cells featuring a polymeric blend of organics have shown promise in a field largely dominated by inorganic e g. In this work double bulk heterojunction organic solar cells are fabricated by sequential blade cast in ambient conditions.

In the past decades a p type conjugated polymer and an n type fullerene derivative have been the most commonly used electron donor and electron acceptor respectively. The nature and order of the blocking layers as well as the nature of the metal electrode. Silicon solar cells specifically fullerene derivatives act as electron acceptors for donor materials like p3ht poly 3 hexyl thiophene 2 5 diyl creating a. While most advances of the device performance come from the design.

Polymer fullerene bulk heterojunction solar cells are a type of solar cell researched in academic laboratories. While this isn t the highest on the market the current champion are the maxeon cells offered by sunpower which reach as high as 22 7 efficiency it is a significant improvement over conventional. The bulk heterojunction blend of an electron donor and an electron acceptor material is the key component in a solution processed organic photovoltaic device. Remarkable improvement in durability of bulk heterojunction solar cells remarkable progress has been achieved during the last ten years.

The efficiency of heterojunction panels currently on the market ranges from 19 9 up to 21 7 with the newest hjt panels from rec solar. Solvent annealing control of bulk heterojunction organic solar cells with 6 6 efficiency based on a benzodithiophene donor core and dicyano acceptor units. Organic bulk heterojunction solar cells using thin film single walled carbon nanotube swcnt anodes deposited on glass are reported. Two types of swcnt films are investigated.