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Questions related from Hasan Abbas
Recently, Erkan Aydin et al. from KAUST have reported that Zr-ITO (IZRO) electrode can enhance the overall performance of PSCs. Now question is that, in which way IZRO will affect performance of PSCs?
10 October 2019 5,332 1 View
Recently, researchers from Peking University reported large-area perovskite solar cells which were more stable 35 km up than at ground level. The researchers also tested the stability of the...
10 October 2019 3,317 6 View
Solar cells generally gives slightly high efficiency in reverse scan than that of forward scan? What is the reason behind it?
09 September 2019 5,032 3 View
Inclusion of Imidazolium Iodide (ImI) can play an important role in expansion of CH3NH3PbI3 (MALI) perovskite. It has been reported by some researchers that efficiency as well as stability of...
07 July 2019 4,513 4 View
During fabrication of perovskite based solar cells; when PbI2 and CH3NH3I dropped onto PEDOT:PSS (HTL) coated ITO substrate, some additional solvent is also dropped onto the film (during spin...
07 July 2019 8,788 3 View
Despite the superior efficiencies of perovskite solar cells (PSCs), the relatively low long-term stability of the perovskite layer (against ambient moisture) is a main concern for the...
07 July 2019 1,282 3 View
Metal halide perovskites (e.g. CH3NH3PBX3) have outstanding optical and electrical properties such as band gap around 1.6 eV, large carrier diffusion length and lifetimes, self regulation etc....
06 June 2019 7,590 1 View
Recently, a research team from NTHU has developed spray synthesis technology to produce perovskite quantum dots (PQDs) featuring nearly 100% quantum yield and high color purity and stability of...
06 June 2019 2,478 1 View
In organic-inorganic hybrid solar cells, long term stability of perovskite materials restricted due to ion migration within perovskite layer. Severe ion diffusion occurs, when PSCs are exposed to...
05 May 2019 1,431 2 View
Goldschmidt tolerance factor is defined as t = (RA+ RX)/sqrt of 2 (RB+ RX) where RA is radius of cation A, RB is radius of cation B and RX is radius of anion. This tolerance factor is used to...
05 May 2019 2,083 2 View
Efficiency of PSCs can be enhanced by water rinsing of PEDOT:PSS and application of MoO3:PEDOT:PSS composite as HTL will stop etching of ITO. Now questions arise, what is the detailed...
05 May 2019 9,048 6 View
Temperature has a great effect on structures and phases of perovskite materials. Therefore, some thermally stable materials can be used in PSCs in order to get highly efficient solar devices. Now...
05 May 2019 5,736 2 View
2D perovskites materials have better stability and doping of 2D perovskites into 3D perovskite will enhance stability of 2D-3D perovskite composite. Now question arises; in which way, 2D...
05 May 2019 1,717 1 View
Ammonium meta tungastate hydrate (AMH) & NaCl etc can be used for doping into PEDOT:PSS to enhance stability of perovskite solar cells. What are the detailed methods of doping these materials...
05 May 2019 9,057 4 View
Lead Sulfide (PbS), Cadmium Telluride (CdTe) and Cadmium selenide (CdSe) etc. are not safe for environment but still have widely been used in solar cells. So what are the reasons behind it? Why...
04 April 2019 2,879 3 View
Graphene has very outstanding optical, electrical, mechanical and chemical properties and can be used as ETL as well as HTL in solar cells. Is this possible to use graphene as hole transport...
04 April 2019 8,877 5 View
Recently EMPA, Zurich, Switzerland has been reported highly efficient (efficiency 20.8 %) flexible solar cells fabricated from CIGS on polyimide. Is this possible to fabricate flexible perovskite...
04 April 2019 4,608 5 View
Lead based perovskites are toxic and subject to international waste disposal regulations. That is why they are replaced by some lead free perovskites, Methyl Ammonium Bismuth Halide, Methyl...
04 April 2019 10,031 4 View
Both Si solar cells and perovskite solar cells have shown greater efficiencies but these cells have some limitations. Currently, Si-Perovskite solar cells and CIGS-Perovskite solar cells have been...
04 April 2019 5,350 2 View
Morphology is an important parameter in solar cells. Each layer of device must be uniform and homogeneous to get better performance. Now question is that: What is interfacial quenching? How it...
04 April 2019 9,527 4 View
Generally, transparency and conductivity exclude each other but, Graphene, ITO etc. are highly transparent and have shown greater conductivity, what is/are the reason(s) behind it?
04 April 2019 3,623 5 View
We can use EDTA-SnO2 in planar type solar cells (PSCs) as ETL and this had shown suppressed hysteresis with record efficiency (Dong Yang et al.). Now question arises, can we apply EDTA-SnO2 (ETL)...
03 March 2019 8,970 2 View
