scholarly journals Novel zero-dimensional lead-free bismuth based perovskites: from synthesis to structural and optoelectronic characterization

2020 ◽  
Vol 1 (9) ◽  
pp. 3439-3448
Author(s):  
Mailde S. Ozório ◽  
Willian X. C. Oliveira ◽  
Julian F. R. V. Silveira ◽  
Ana Flávia Nogueira ◽  
Juarez L. F. Da Silva
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Lead Free ◽  
Term Stability ◽  
Long Term Stability ◽  
High Efficiency Solar Cells

Despite high photo-conversion efficiency, the short long-term stability and toxicity issues have prevented lead-based perovskites from becoming the standard in high efficiency solar cells.

scholarly journals A Review on Improving the Quality of Perovskite Films in Perovskite Solar Cells via the Weak Forces Induced by Additives

2019 ◽  
Vol 9 (20) ◽  
pp. 4393 ◽  
Author(s):  
Jien Yang ◽  
Songhua Chen ◽  
Jinjin Xu ◽  
Qiong Zhang ◽  
Hairui Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Term Stability ◽  
Long Term Stability ◽  
Weak Forces

Perovskite solar cells (PSCs) employing organic-inorganic halide perovskite as active layers have attracted the interesting of many scientists since 2009. The power conversion efficiency (PCE) have pushed certified 25.2% in 2019 from initial 3.81% in 2009, which is much faster than that of any type of solar cell. In the process of optimization, many innovative approaches to improve the morphology of perovskite films were developed, aiming at elevate the power conversion efficiency of perovskite solar cells (PSCs) as well as long-term stability. In the context of PSCs research, the perovskite precursor solutions modified with different additives have been extensively studied, with remarkable progress in improving the whole performance. In this comprehensive review, we focus on the forces induced by additives between the cations and anions of perovskite precursor, such as hydrogen bonds, coordination or some by-product (e.g., mesophase), which will lead to form intermediate adduct phases and then can be converted into high quality films. A compact uniform perovskite films can not only upgrade the power conversion efficiency (PCE) of devices but also improve the stability of PSCs under ambient conditions. Therefore, strategies for the implementation of additives engineering in perovskites precursor solution will be critical for the future development of PSCs. How to manipulate the weak forces in the fabrication of perovskite film could help to further develop high-efficiency solar cells with long-term stability and enable the potential of future practical applications.

Improvement of the power conversion efficiency and long term stability of polymer solar cells by incorporation of amphiphilic Nafion doped PEDOT-PSS as a hole extraction layer

2015 ◽  
Vol 3 (36) ◽  
pp. 18727-18734 ◽  
Author(s):  
Xuliang Hou ◽  
Qiuxiang Li ◽  
Tai Cheng ◽  
Lu Yu ◽  
Fuzhi Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Term Stability ◽  
Long Term Stability

An effective method to enhance the conductivity and stability of PEDOT-PSS by doping with an amphiphilic perfluorosulfonic copolymer is reported.

CaI2: a more effective passivator of perovskite films than PbI2 for high efficiency and long-term stability of perovskite solar cells

2018 ◽  
Vol 6 (17) ◽  
pp. 7903-7912 ◽  
Author(s):  
Chuanliang Chen ◽  
Yao Xu ◽  
Shaohang Wu ◽  
Shasha Zhang ◽  
Zhichun Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Term Stability ◽  
Long Term Stability ◽  
Additive Content ◽  
Crystal Grains ◽  
Very High

Much less additive content of 0.5% CaI2 instead of 5% PbI2 was incorporated into the CH3NH3PbI3 film and a dense and surface-smooth morphology was obtained with much enlarged crystal grains. The champion PSC based on MAPbI3(CaI2)0.005 layer demonstrated a very high PCE of 19.3% with superior long-term stability.

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