CsPbBr3 and CH3NH3PbBr3 promote visible-light photo-reactivity

2018 ◽  
Vol 20 (24) ◽  
pp. 16847-16852
Author(s):  
Shankar Harisingh ◽  
Sujith Ramakrishnan ◽  
Michael Kulbak ◽  
Igal Levine ◽  
David Cahen ◽  
...  

Inorganic and organic lead halide perovskite materials attract great interest in the scientific community because of their potential for low-cost, high efficiency solar cells.

2020 ◽  
Vol 56 (8) ◽  
pp. 1235-1238 ◽  
Author(s):  
Atsushi Kogo ◽  
Masayuki Chikamatsu

The bandgap energy of perovskite materials was tuned by post-treatment with methylammonium and formamidinium halides to improve the efficiency up to 20.06%.


Metals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 667 ◽  
Author(s):  
Edson Meyer ◽  
Dorcas Mutukwa ◽  
Nyengerai Zingwe ◽  
Raymond Taziwa

Perovskite solar cells employ lead halide perovskite materials as light absorbers. These perovskite materials have shown exceptional optoelectronic properties, making perovskite solar cells a fast-growing solar technology. Perovskite solar cells have achieved a record efficiency of over 20%, which has superseded the efficiency of Gräztel dye-sensitized solar cell (DSSC) technology. Even with their exceptional optical and electric properties, lead halide perovskites suffer from poor stability. They degrade when exposed to moisture, heat, and UV radiation, which has hindered their commercialization. Moreover, halide perovskite materials consist of lead, which is toxic. Thus, exposure to these materials leads to detrimental effects on human health. Halide double perovskites with A2B′B″X6 (A = Cs, MA; B′ = Bi, Sb; B″ = Cu, Ag, and X = Cl, Br, I) have been investigated as potential replacements of lead halide perovskites. This work focuses on providing a detailed review of the structural, optical, and stability properties of these proposed perovskites as well as their viability to replace lead halide perovskites. The triumphs and challenges of the proposed lead-free A2B′B″X6 double perovskites are discussed here in detail.


Metals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 964 ◽  
Author(s):  
Yue Zhang ◽  
Haiming Zhang ◽  
Xiaohui Zhang ◽  
Lijuan Wei ◽  
Biao Zhang ◽  
...  

Organic–inorganic hybrid perovskite solar cells (PSCs) have made immense progress in recent years, owing to outstanding optoelectronic properties of perovskite materials, such as high extinction coefficient, carrier mobility, and low exciton binding energy. Since the first appearance in 2009, the efficiency of PSCs has reached 23.3%. This has made them the most promising rival to silicon-based solar cells. However, there are still several issues to resolve to promote PSCs’ outdoor applications. In this review, three crucial aspects of PSCs, including high efficiency, environmental stability, and low-cost of PSCs, are described in detail. Recent in-depth studies on different aspects are also discussed for better understanding of these issues and possible solutions.


2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Guiming Peng ◽  
Xueqing Xu ◽  
Gang Xu

The ramping solar energy to electricity conversion efficiencies of hybrid organic-inorganic perovskite solar cells during the last five years have opened new doors to low-cost solar energy. The record power conversion efficiency has climbed to 19.3% in August 2014 and then jumped to 20.1% in November. In this review, the main achievements for perovskite solar cells categorized from a viewpoint of device structure are overviewed. The challenges and prospects for future development of this field are also briefly presented.


2014 ◽  
Vol 26 (44) ◽  
pp. 7499-7504 ◽  
Author(s):  
Daniel Bryant ◽  
Peter Greenwood ◽  
Joel Troughton ◽  
Maarten Wijdekop ◽  
Mathew Carnie ◽  
...  

2016 ◽  
Vol 4 (10) ◽  
pp. 3806-3812 ◽  
Author(s):  
Baohua Wang ◽  
King Young Wong ◽  
Shangfeng Yang ◽  
Tao Chen

Perovskite films with 5 μm crystalline domains were prepared with a solvent annealing method, achieving reduced bulk and surface defect densities.


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