What is PTB7?
PTB7 is a semiconducting polymer used in organic photovoltaics with an energy efficiency of 9.15%. It can act as an electron donor with narrow optical band gaps and excellent π-π conjugation while forming a nanocomposite with fullerenes.
What is an inverted solar cell?
A novel structural organic solar cells (OSCs) with high work function metal as the top electrode and low work function metal or metal oxide as the bottom anode was proposed and named as inverted configuration OSCs.
What is BHJ solar cell?
Unlike inorganic solar cells, BHJ solar cells use small molecular or polymeric light absorbers which can be delicately designed and assembled. The current review aims to summarize H-bonding in small molecule and polymer based donor materials as well as acceptor materials in BHJ solar cells.
Which type of solar cells exhibits the highest conversion efficiency?
The main advantage of monocrystalline solar cells is the higher efficiency of conversion of solar energy into electric energy than its two other counterparts.
What is the main problem with plastic solar cells?
A major issue surrounding polymer solar cells is the low Power Conversion Efficiency (PCE) of fabricated cells. In order to be considered commercially viable, PSCs must be able to achieve at least 10–15% efficiency—this is already much lower than inorganic PVs.
What is a benefit of using organic solar cells?
It has several promising advantages, including its lightweight, large surface area, low cost and robustness. The organic solar cell can store much larger quantities of solar energy than other solar technologies due to its high optical absorption coefficients.
Who invented organic solar cell?
1953 – Gerald Pearson begins research into lithium-silicon photovoltaic cells. 1954 – On April 25, 1954, Bell Labs announces the invention of the first practical silicon solar cell. Shortly afterwards, they are shown at the National Academy of Sciences Meeting. These cells have about 6% efficiency.
What is photovoltaic power potential?
Average Daily Photovoltaic Power Potential (kWh/kWp) The daily average amount of electricity generated by a photovoltaic system with 1 kilowatt peak installed capacity.
Why choose PTB7 for polymer solar cells?
PTB7 gives some of the highest reported efficiencies for polymer:fullerene solar cells due to its extended absorption into the near infra-red and lower HOMO level. Together with our complete package of processing information, PTB7 becomes a quick and easy way to improve device efficiencies.
What is the VOC value of PTB7-Th solar cell?
In addition, BTA7 shows strong crystallinity and broad absorption spectrum. As a result, PTB7-Th:BTA7 based solar cell could realized a moderate PCE of 4.60% with a very high Voc of 1.05 V by using a solvent additive of DPE. This Voc value is one of the highest values reported so far for PTB7-Th based OSCs.
Which n-type polymers can be paired with PTB7-Th?
Besides of n-type polymers, numerous NFSMAs have also been successfully paired with PTB7-Th as their high electron mobility, good electron affinity and tunable LUMO levels.
Why choose PTB7 ink?
By using new interface materials and architectures PTB7 has been shown to reach efficiencies of 9.2% PCE in the literature [1,2]. The high solubility in a wide range of solvents makes ink preparation and filtration simple, and PTB7 is one of the easiest materials we have ever worked with (simply shake it to dissolve).