Abstract
Organic-inorganic hybrid perovskites have recently attracted substantial attention as a top candidate for use as light-absorbing materials in high-efficiency, low-cost and solution-processable photovoltaic devices owing to their excellent optoelectronic properties. Here, we fabricated inverted planar perovskite solar cells by incorporating small amounts of ammonium halide NH4X (X = F, Cl, Br, I) additives into a CH3NH3PbI3 (MAPbI3) perovskite solution. A compact and uniform perovskite absorber layer with large perovskite crystalline grains is realized by simply incorporating small amounts of additives and by using an anti-solvent engineering technique to control the nucleation and crystal growth of perovskite. The enlarged perovskite grain size with a reduced density of the grain boundaries and improved crystallinity results in fewer charge carrier recombinations and a reduced defect density, leading to enhanced device efficiency (NH4F: 14.88 ± 0.33%, NH4Cl: 16.63 ± 0.21%, NH4Br: 16.64 ± 0.35%, and NH4I: 17.28 ± 0.15%) compared to that of a reference MAPbI3 device (Ref.: 12.95 ± 0.48%) and greater device stability. This simple technique involving the introduction of small amounts of ammonium halide additives to regulate the nucleation and crystal growth of perovskite films translates into highly reproducible enhanced device performance.
| Original language | English |
|---|---|
| Journal | Journal of Industrial and Engineering Chemistry |
| DOIs | |
| Publication status | Accepted/In press - 2019 Jan 1 |
Fingerprint
Keywords
- Ammonium halide additives
- Anti-Solvent engineering
- CHNHPbIperovskite
- Inverted planar structure
- Perovskite grain size
ASJC Scopus subject areas
- Chemical Engineering(all)
Cite this
High-performance CH3NH3PbI3 inverted planar perovskite solar cells via ammonium halide additives. / Jahandar, Muhammad; Khan, N.; Jahankhan, Muhammad; Song, Chang Eun; Lee, Hang Ken; Lee, Sang Kyu; Shin, Won Suk; Lee, Jong Cheol; Im, Sang Hyuk; Moon, Sang Jin.
In: Journal of Industrial and Engineering Chemistry, 01.01.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - High-performance CH3NH3PbI3 inverted planar perovskite solar cells via ammonium halide additives
AU - Jahandar, Muhammad
AU - Khan, N.
AU - Jahankhan, Muhammad
AU - Song, Chang Eun
AU - Lee, Hang Ken
AU - Lee, Sang Kyu
AU - Shin, Won Suk
AU - Lee, Jong Cheol
AU - Im, Sang Hyuk
AU - Moon, Sang Jin
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Organic-inorganic hybrid perovskites have recently attracted substantial attention as a top candidate for use as light-absorbing materials in high-efficiency, low-cost and solution-processable photovoltaic devices owing to their excellent optoelectronic properties. Here, we fabricated inverted planar perovskite solar cells by incorporating small amounts of ammonium halide NH4X (X = F, Cl, Br, I) additives into a CH3NH3PbI3 (MAPbI3) perovskite solution. A compact and uniform perovskite absorber layer with large perovskite crystalline grains is realized by simply incorporating small amounts of additives and by using an anti-solvent engineering technique to control the nucleation and crystal growth of perovskite. The enlarged perovskite grain size with a reduced density of the grain boundaries and improved crystallinity results in fewer charge carrier recombinations and a reduced defect density, leading to enhanced device efficiency (NH4F: 14.88 ± 0.33%, NH4Cl: 16.63 ± 0.21%, NH4Br: 16.64 ± 0.35%, and NH4I: 17.28 ± 0.15%) compared to that of a reference MAPbI3 device (Ref.: 12.95 ± 0.48%) and greater device stability. This simple technique involving the introduction of small amounts of ammonium halide additives to regulate the nucleation and crystal growth of perovskite films translates into highly reproducible enhanced device performance.
AB - Organic-inorganic hybrid perovskites have recently attracted substantial attention as a top candidate for use as light-absorbing materials in high-efficiency, low-cost and solution-processable photovoltaic devices owing to their excellent optoelectronic properties. Here, we fabricated inverted planar perovskite solar cells by incorporating small amounts of ammonium halide NH4X (X = F, Cl, Br, I) additives into a CH3NH3PbI3 (MAPbI3) perovskite solution. A compact and uniform perovskite absorber layer with large perovskite crystalline grains is realized by simply incorporating small amounts of additives and by using an anti-solvent engineering technique to control the nucleation and crystal growth of perovskite. The enlarged perovskite grain size with a reduced density of the grain boundaries and improved crystallinity results in fewer charge carrier recombinations and a reduced defect density, leading to enhanced device efficiency (NH4F: 14.88 ± 0.33%, NH4Cl: 16.63 ± 0.21%, NH4Br: 16.64 ± 0.35%, and NH4I: 17.28 ± 0.15%) compared to that of a reference MAPbI3 device (Ref.: 12.95 ± 0.48%) and greater device stability. This simple technique involving the introduction of small amounts of ammonium halide additives to regulate the nucleation and crystal growth of perovskite films translates into highly reproducible enhanced device performance.
KW - Ammonium halide additives
KW - Anti-Solvent engineering
KW - CHNHPbIperovskite
KW - Inverted planar structure
KW - Perovskite grain size
UR - http://www.scopus.com/inward/record.url?scp=85070889184&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85070889184&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2019.08.004
DO - 10.1016/j.jiec.2019.08.004
M3 - Article
AN - SCOPUS:85070889184
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
SN - 1226-086X
ER -