Nano, Volume 09, Issue 05, July 2014.
The sun finds a diamond in the rough, which is the organo-metal halide perovskite. Thanks to exceptional optoelectronic characteristics, solar cells employing perovskite demonstrated first a power conversion efficiency (PCE) of 9.7% in the middle of 2012, which rose steeply to an amazing 16% at the end of 2013. Perovskite-based photovoltaics have several advantages over conventional semiconductor p-n junction devices because high efficiency can be achieved from sub-micrometer-thick very cheap perovskite layers that can be formed by solution processing at temperatures below 150°C, rendering the perovskite solar cell versatile in its application. If photo- and thermal stability as well as tolerance to humidity can be achieved, commercial application on the large scale appear to be feasible. Perovskite solar cells based on organolead halide perovskite light absorbers have been considered as an emerging photovoltaic technology because of superb photovoltaic performance and very low cost. Since the first trial of perovskite as a sensitizer in dye-sensitized solar cell structure in 2009, efficiency was improved from 3.8% to 6.% by optimizing perovskite coating condition in 2011. However, perovskite has drawback in the liquid based sensitized solar cell because it tends to dissolve in liquid electrolyte. In 2012, all-solid-state perovskite solar cell with long-term durability and higher efficiency of 9.7% was reported. This finding sparks the beginning of perovskite solar cell era. As of the end of 2013, the certified efficiency of 16.2% was achieved from perovskite solar cell. Based on learning curve, higher efficiency approaching 20% is expected.
MICHAEL GRÄTZEL et al
Click for full article
The sun finds a diamond in the rough, which is the organo-metal halide perovskite. Thanks to exceptional optoelectronic characteristics, solar cells employing perovskite demonstrated first a power conversion efficiency (PCE) of 9.7% in the middle of 2012, which rose steeply to an amazing 16% at the end of 2013. Perovskite-based photovoltaics have several advantages over conventional semiconductor p-n junction devices because high efficiency can be achieved from sub-micrometer-thick very cheap perovskite layers that can be formed by solution processing at temperatures below 150°C, rendering the perovskite solar cell versatile in its application. If photo- and thermal stability as well as tolerance to humidity can be achieved, commercial application on the large scale appear to be feasible. Perovskite solar cells based on organolead halide perovskite light absorbers have been considered as an emerging photovoltaic technology because of superb photovoltaic performance and very low cost. Since the first trial of perovskite as a sensitizer in dye-sensitized solar cell structure in 2009, efficiency was improved from 3.8% to 6.% by optimizing perovskite coating condition in 2011. However, perovskite has drawback in the liquid based sensitized solar cell because it tends to dissolve in liquid electrolyte. In 2012, all-solid-state perovskite solar cell with long-term durability and higher efficiency of 9.7% was reported. This finding sparks the beginning of perovskite solar cell era. As of the end of 2013, the certified efficiency of 16.2% was achieved from perovskite solar cell. Based on learning curve, higher efficiency approaching 20% is expected.
MICHAEL GRÄTZEL et al
Click for full article
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