Bulk Heterojunction Solar Cells

The journal of physical chemistry c 2015 119 36 20871 20879.

Bulk heterojunction solar cells.

In this work double bulk heterojunction organic solar cells are fabricated by sequential blade cast in ambient conditions. 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. Polymer fullerene bulk heterojunction solar cells are a type of solar cell researched in academic laboratories. Probed by the in situ grazing incidence x ray diffraction and in situ uv vis absorption measurements the seq blade system exhibits a different tendency from each of the binary films during the film formation process.

Photovoltaic cells featuring a polymeric blend of organics have shown promise in a field largely dominated by inorganic e g. 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. Remarkable improvement in durability of bulk heterojunction solar cells remarkable progress has been achieved during the last ten years. The nature and order of the blocking layers as well as the nature of the metal electrode.

Two types of swcnt films are investigated. In recent decades organic thin film bulk heterojunction solar cells have been intensively investigated because of their advantages such as high power conversion efficiency pce low cost light weight and a convenient fabrication process pces of over 15 have been realized recently in single organic solar cells oscs indicating great potential for future. Solvent annealing control of bulk heterojunction organic solar cells with 6 6 efficiency based on a benzodithiophene donor core and dicyano acceptor units. Silicon solar cells specifically fullerene derivatives act as electron acceptors for donor materials like p3ht poly 3 hexyl thiophene 2 5 diyl creating a.

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. While most advances of the device performance come from the design. 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. Organic bulk heterojunction solar cells using thin film single walled carbon nanotube swcnt anodes deposited on glass are reported.