The Effect of Component Defects on the Performance of Perovskite Devices and the Low-Cost Preparation of High-Purity PbI2
"> Figure 1
<p>(<b>a</b>) The stoichiometry of different PbI<sub>2</sub> samples; (<b>b</b>) XRD patterns of commercial PbI<sub>2</sub> and different stoichiometric PbI<sub>2</sub>; SEM images (<b>c</b>–<b>f</b>) of commercial PbI<sub>2</sub> and different stoichiometric PbI<sub>2</sub>; (<b>c</b>) commercial PbI<sub>2</sub>; (<b>d</b>) PbI<sub>1.956</sub>; (<b>e</b>) PbI<sub>1.932</sub>; (<b>f</b>) PbI<sub>1.880</sub>. The red circle indicates the needle-shaped crystal structure Pb(OH)I.</p> "> Figure 2
<p>(<b>a</b>) XRD patterns of perovskite thin films prepared from commercial PbI<sub>2</sub> and different stoichiometric PbI<sub>2</sub>; (<b>b</b>) ultraviolet absorption spectra of perovskite thin films prepared from commercial PbI<sub>2</sub> and different stoichiometric PbI<sub>2</sub>; SEM images (<b>c</b>–<b>f</b>) of perovskite thin films prepared from commercial PbI<sub>2</sub> and different stoichiometric PbI<sub>2</sub>; (<b>c</b>) commercial PbI<sub>2</sub>; (<b>d</b>) PbI<sub>1.956</sub>; (<b>e</b>) PbI<sub>1.932</sub>; (<b>f</b>) PbI<sub>1.880</sub>. Unreacted PbI<sub>2</sub> marked in red circle.</p> "> Figure 3
<p>(<b>a</b>) DLS spectra of commercial PbI<sub>2</sub> and different stoichiometric PbI<sub>2</sub> in DMF solution; (<b>b</b>) DLS spectra of perovskite precursor solution prepared from commercial PbI<sub>2</sub> and different stoichiometric PbI<sub>2</sub>.</p> "> Figure 4
<p>(<b>a</b>) PL spectra of perovskite thin films prepared from commercial PbI<sub>2</sub> and different stoichiometric PbI<sub>2</sub>; (<b>b</b>) TRPL spectra of perovskite thin films prepared from commercial PbI<sub>2</sub> and different stoichiometric PbI<sub>2</sub>.</p> "> Figure 5
<p>Box plots of perovskite devices: (<b>a</b>) PCE; (<b>b</b>) <span class="html-italic">Jsc</span>; (<b>c</b>) FF; (<b>d</b>) <span class="html-italic">Voc</span> prepared from commercial PbI<sub>2</sub> and different stoichiometric PbI<sub>2</sub>. The structure was FTO/C−TiO<sub>2</sub>−SnO<sub>2</sub>/FA<sub>0.95</sub>Cs<sub>0.05</sub>PbI<sub>3</sub>/Spiro−MeOTAD/Ag.</p> "> Figure 6
<p>SEM images (<b>a</b>,<b>b</b>) of PbI<sub>2</sub>: (<b>a</b>) commercial PbI<sub>2</sub>; (<b>b</b>) PbI<sub>1.995</sub>. (<b>c</b>) XRD patterns of commercial PbI<sub>2</sub> and PbI<sub>1.995</sub>.</p> "> Figure 7
<p>SEM images of perovskite films prepared from (<b>a</b>) commercial PbI<sub>2</sub> and (<b>b</b>) PbI<sub>1.995</sub>; (<b>c</b>) ultraviolet absorption spectra of perovskite thin films; (<b>d</b>) XRD patterns of perovskite thin films; (<b>e</b>) PL spectra of perovskite thin films; (<b>f</b>) TRPL spectra of perovskite thin films. Unreacted PbI<sub>2</sub> is marked in red circles and the peak indicated by the asterisk is the characteristic peak of PbI<sub>2</sub> impurity.</p> "> Figure 8
<p>Box plots of perovskite devices: (<b>a</b>) PCE; (<b>b</b>) <span class="html-italic">Jsc</span>; (<b>c</b>) FF; (<b>d</b>) <span class="html-italic">Voc</span> prepared from commercial PbI<sub>2</sub> and PbI<sub>1.995</sub>. The structure was FTO/C−TiO<sub>2</sub>−SnO<sub>2</sub>/FA<sub>0.95</sub>Cs<sub>0.05</sub>PbI<sub>3</sub>/Spiro−MeOTAD/Ag.</p> ">
Abstract
:1. Introduction
2. Results and Discussion
3. Materials and Methods
3.1. Materials
3.2. Experimental Methods
3.3. Device Fabrication
3.4. Characterization
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Sample | Voc (V) | Jsc (mA/cm2) | FF (%) | PCE (%) |
---|---|---|---|---|
Commercial PbI2 | 1.03 | 26.38 | 82.07 | 22.295 |
PbI1.956 | 0.99 | 26.33 | 80.84 | 21.075 |
PbI1.932 | 0.98 | 23.95 | 72.29 | 16.976 |
Lead Iodide Sample | Ice Acetic Acid Concentration | Additives | Ratio of I:Pb | Amount of Pb (wt%) |
---|---|---|---|---|
Water-based synthesis method | 6.9% | H3PO2 | 1.995 | 46.001 |
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Dong, B.; Xie, Y.; Lou, Y. The Effect of Component Defects on the Performance of Perovskite Devices and the Low-Cost Preparation of High-Purity PbI2. Molecules 2024, 29, 3810. https://doi.org/10.3390/molecules29163810
Dong B, Xie Y, Lou Y. The Effect of Component Defects on the Performance of Perovskite Devices and the Low-Cost Preparation of High-Purity PbI2. Molecules. 2024; 29(16):3810. https://doi.org/10.3390/molecules29163810
Chicago/Turabian StyleDong, Boyu, Yuhan Xie, and Yongbing Lou. 2024. "The Effect of Component Defects on the Performance of Perovskite Devices and the Low-Cost Preparation of High-Purity PbI2" Molecules 29, no. 16: 3810. https://doi.org/10.3390/molecules29163810