Structure-Dependent Photoluminescence in Low-Dimensional Ethylammonium, Propylammonium, and Butylammonium Lead Iodide Perovskites

2019 ◽  
Vol 12 (4) ◽  
pp. 5008-5016 ◽  
Author(s):  
Chang-Wei Lin ◽  
Fangzhou Liu ◽  
Ting-Yang Chen ◽  
Kuan-Hua Lee ◽  
Chung-Kai Chang ◽  
...  
Keyword(s):  
Lead Iodide ◽  
Low Dimensional

scholarly journals The Effect of Structural Dimensionality on Carrier Mobility in Lead-Halide Perovskites

2019 ◽  
Author(s):  
Noor Titan Putri Hartono ◽  
Shijing Sun ◽  
María Gélvez-Rueda ◽  
Polly Pierone ◽  
Matthew Erodici ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Carrier Mobility ◽  
Perovskite Solar Cells ◽  
Charge Carrier Mobility ◽  
Lead Iodide ◽  
Optical Pump ◽  
Structural Dimensionality ◽  
Low Dimensional ◽  
Lower Dimensional

<p>Methylammonium lead iodide (MAPI) is a prototypical photo absorber in perovskite solar cells (PSCs), reaching efficiencies above 20%. However, its hygroscopic nature has prompted the quest to find water-resistant alternatives. Recent studies have suggested that mixing MAPI with lower dimensional, bulky-<i>A</i>-site-cation perovskites helps mitigate this environmental instability. On the other hand, low dimensional perovskites suffer from poor device performance, which has been suggested to be due to limited out-of-plane charge carrier mobility resulting from structural dimensionality and large binding energy of the charge carriers. To understand the effects of dimensionality on performance, we systematically mixed MA-based 3D perovskites with larger <i>A</i>-site cation, dimethylammonium, iso-propylammonium, and t-butylammonium lead iodide perovskites. During the shift from MAPI to lower dimensional (LD) PSCs, the efficiency is significantly reduced by 2 orders of magnitude, with short-circuit currents decreasing from above 20 mA/cm<sup>2</sup> to less than 1 mA/cm<sup>2</sup>. In order to explain these decrease in performance, we studied the charge carrier mobilities of these materials using optical-pump/ terahertz-probe, time-resolved microwave photoconductivity, and photoluminescence measurements. The results show that as we add more of the low dimensional perovskites, the mobility decreases by a factor of 20 when it reaches pure LD perovskites. In addition, the photoluminescence decay fitting is slightly slower for the mixed perovskites, suggesting some improvement in the recombination dynamics. These findings indicate that changes in structural dimensionality by mixing<i> A</i>-site cations play an important role in measured charge carrier mobility, and in the performance of perovskite solar cells.</p>

Incorporation of a Redox-Active Bis(guanidine) in Low-Dimensional Tin and Lead Iodide Structures

2017 ◽  
Vol 2017 (47) ◽  
pp. 5539-5544 ◽  
Author(s):  
Hendrik Herrmann ◽  
Petra Walter ◽  
Elisabeth Kaifer ◽  
Hans-Jörg Himmel
Keyword(s):  
Lead Iodide ◽  
Redox Active ◽  
Low Dimensional

High performance low-dimensional perovskite solar cells based on a one dimensional lead iodide perovskite

2019 ◽  
Vol 7 (15) ◽  
pp. 8811-8817 ◽  
Author(s):  
Chunqing Ma ◽  
Dong Shen ◽  
Bin Huang ◽  
Xiaocui Li ◽  
Wen-Cheng Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
One Dimensional ◽  
Low Dimensional

One-dimensional perovskites enable high performance low-dimensional perovskite solar cells.

scholarly journals Front Cover: Incorporation of a Redox-Active Bis(guanidine) in Low-Dimensional Tin and Lead Iodide Structures (Eur. J. Inorg. Chem. 47/2017)

2017 ◽  
Vol 2017 (47) ◽  
pp. 5536-5536
Author(s):  
Hendrik Herrmann ◽  
Petra Walter ◽  
Elisabeth Kaifer ◽  
Hans-Jörg Himmel
Keyword(s):  
Lead Iodide ◽  
Front Cover ◽  
Redox Active ◽  
Low Dimensional

Electronic structures of lead iodide based low-dimensional crystals

2003 ◽  
Vol 67 (15) ◽  
Author(s):  
T. Umebayashi ◽  
K. Asai ◽  
T. Kondo ◽  
A. Nakao
Keyword(s):  
Electronic Structures ◽  
Lead Iodide ◽  
Low Dimensional

scholarly journals Confinement Effects in Low-Dimensional Lead Iodide Perovskite Hybrids

2016 ◽  
Vol 28 (13) ◽  
pp. 4554-4562 ◽  
Author(s):  
Machteld E. Kamminga ◽  
Hong-Hua Fang ◽  
Marina R. Filip ◽  
Feliciano Giustino ◽  
Jacob Baas ◽  
...  
Keyword(s):  
Confinement Effects ◽  
Lead Iodide ◽  
Low Dimensional

scholarly journals Incorporation of a Redox-Active Bis(guanidine) in Low-Dimensional Tin and Lead Iodide Structures

2017 ◽  
Vol 2017 (47) ◽  
pp. 5537-5537
Author(s):  
Hendrik Herrmann ◽  
Petra Walter ◽  
Elisabeth Kaifer ◽  
Hans-Jörg Himmel
Keyword(s):  
Lead Iodide ◽  
Redox Active ◽  
Low Dimensional

scholarly journals The Effect of Structural Dimensionality on Carrier Mobility in Lead-Halide Perovskites

2019 ◽  
Author(s):  
Noor Titan Putri Hartono ◽  
Shijing Sun ◽  
María Gélvez-Rueda ◽  
Polly Pierone ◽  
Matthew Erodici ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Carrier Mobility ◽  
Perovskite Solar Cells ◽  
Charge Carrier Mobility ◽  
Lead Iodide ◽  
Optical Pump ◽  
Structural Dimensionality ◽  
Low Dimensional ◽  
Lower Dimensional

<p>Methylammonium lead iodide (MAPI) is a prototypical photo absorber in perovskite solar cells (PSCs), reaching efficiencies above 20%. However, its hygroscopic nature has prompted the quest to find water-resistant alternatives. Recent studies have suggested that mixing MAPI with lower dimensional, bulky-<i>A</i>-site-cation perovskites helps mitigate this environmental instability. On the other hand, low dimensional perovskites suffer from poor device performance, which has been suggested to be due to limited out-of-plane charge carrier mobility resulting from structural dimensionality and large binding energy of the charge carriers. To understand the effects of dimensionality on performance, we systematically mixed MA-based 3D perovskites with larger <i>A</i>-site cation, dimethylammonium, iso-propylammonium, and t-butylammonium lead iodide perovskites. During the shift from MAPI to lower dimensional (LD) PSCs, the efficiency is significantly reduced by 2 orders of magnitude, with short-circuit currents decreasing from above 20 mA/cm<sup>2</sup> to less than 1 mA/cm<sup>2</sup>. In order to explain these decrease in performance, we studied the charge carrier mobilities of these materials using optical-pump/ terahertz-probe, time-resolved microwave photoconductivity, and photoluminescence measurements. The results show that as we add more of the low dimensional perovskites, the mobility decreases by a factor of 20 when it reaches pure LD perovskites. In addition, the photoluminescence decay fitting is slightly slower for the mixed perovskites, suggesting some improvement in the recombination dynamics. These findings indicate that changes in structural dimensionality by mixing<i> A</i>-site cations play an important role in measured charge carrier mobility, and in the performance of perovskite solar cells.</p>

Strain and layer modulated electronic and optical properties of low dimensional perovskite methylammonium lead iodide: Implications to solar cells

Solar Energy ◽  
2018 ◽  
Vol 173 ◽  
pp. 1315-1322 ◽  
Author(s):  
Narayan N. Som ◽  
P.M.W.P. Sampath ◽  
Shweta D. Dabhi ◽  
Venu Mankad ◽  
Satyam Shinde ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solar Cells ◽  
Lead Iodide ◽  
Electronic And Optical Properties ◽  
Low Dimensional ◽  
Methylammonium Lead Iodide

scholarly journals How machine learning can help select capping layers to suppress perovskite degradation

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Noor Titan Putri Hartono ◽  
Janak Thapa ◽  
Armi Tiihonen ◽  
Felipe Oviedo ◽  
Clio Batali ◽  
...  
Keyword(s):  
Machine Learning ◽  
Perovskite Solar Cells ◽  
Supervised Machine Learning ◽  
Environmental Stability ◽  
Lead Iodide ◽  
Film Stability ◽  
Organic Halide ◽  
Capping Layer ◽  
Shapley Values ◽  
Low Dimensional

Abstract Environmental stability of perovskite solar cells (PSCs) has been improved by trial-and-error exploration of thin low-dimensional (LD) perovskite deposited on top of the perovskite absorber, called the capping layer. In this study, a machine-learning framework is presented to optimize this layer. We featurize 21 organic halide salts, apply them as capping layers onto methylammonium lead iodide (MAPbI3) films, age them under accelerated conditions, and determine features governing stability using supervised machine learning and Shapley values. We find that organic molecules’ low number of hydrogen-bonding donors and small topological polar surface area correlate with increased MAPbI3 film stability. The top performing organic halide, phenyltriethylammonium iodide (PTEAI), successfully extends the MAPbI3 stability lifetime by 4 ± 2 times over bare MAPbI3 and 1.3 ± 0.3 times over state-of-the-art octylammonium bromide (OABr). Through characterization, we find that this capping layer stabilizes the photoactive layer by changing the surface chemistry and suppressing methylammonium loss.

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