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Nur zur Info bezüglich der Vorgangsweise - speziell für dich Pebbles:
3.4. WP 4 - Lifetime/Modules.
The work is organized into three tasks, dealing with device optimization for selected materials developed in WP1-3, fabrication of 10cm2 modules and testing of device stability under heat and light soaking conditions. We have undertaken some preliminary tests, light soaking (1 sun, ~55 °C), thermal stress test (85 °C / 5% RH), and at the end damp heat test (85 °C / 85 % RH). Initial results from lightsoaking indicated promising stability with only 5% relative loss of performance after ~3400 h.Unfortunately, initial results from thermal stress at 85 °C were less encouraging with efficiencies showing ~60% relative loss of performance after less than 300 h. The degradation mechanism is still not well understood at this point. Several actions are in progress in order toimprove the cell stability at high temperature (>80 °C). Our preliminary damp heat testing
showed mixed results. A combination of materials enabled us to obtain good results at
temperatures up to 75 °C without major degradation and loss of performance. However, the
As an additional work, a strong collaboration has been set-up within the EU-India joint
consortia involving DSL and CNR from the EU side and IICT from the India side, to investigate the to plan durability assessment of IICT’s Y1 dye, which is of commercial interest to Dyesol, and to simultaneously carry out modelling to understand the experimental results and facilitate future predictions of material and device characteristics. Y1 and Y2 dyes from IICT have been shipped to DSL and CNR has calculated the binding energies of these dyes against the Black Dye on TiO2. This topic will be the subject of an EU-India joint publication. In order to “improve temporal stability of 1cm2 cells by 15% over state of the art” according to standard test IEC 61646, we focused our work on the two main tests, i.e. light soaking (1 sun,~55°C) and damp heat test (85°C/85% RH), and several materials (dyes, electrolytes, seals…)were tested. All the results are obtained for standard 8.8x11 mm2 cells (0.88 cm2), which are the standard Dyesol test cells. These are small elements extracted directly from the geometries of larger tiles, so the results can be safely scaled to larger dimensions.Results from light soaking indicated good stability up to ~8000h, with only 8% relative loss of performance. A 19% performance drop after ~11000h was however also observed. We were able to get good results also at the damp heat test, with only a 5% loss of efficiency (at 1 sun) after ~1900h, using cells prepared with 18NR-AO TiO2 paste,TiCl4 OL, Z907 dye, Bynel® 80 μm and HBS-based electrolyte. An epoxy secondary sealing was also applied. Cells were further sealed in a metal-polymer pouch. Encouraging results were obtained for heat test (85°C, dry atmosphere) with an efficiency loss of only 3.2% after 1000h (at ⅓ sun) with the Z907 dye,Surlyn® 50 μm, HBS-2-BI electrolyte and epoxy secondary seal.
Our new device fabrication setup enables us to prepare robust cells that meet the requirements for the standard test IEC 61646. We have seen the positive effect of under and over-layer on cell performances and stability of the seals; we have optimised the epoxy secondary seal and started to investigate the use of a very promising metal/polymer pouch as tertiary seal. Stability assessment of the dyes synthesized in India was performed by considering N749-Y1(from IICT-Hyderabad) cocktails. These DSSCs show much higher efficiencies compared to N749 or Y1 alone (~+16%) and also show also a good stability after ~2000h of long-term light soaking test, with no loss of performance.
Additional stability data (albeit on smaller cells) were gathered for the new MC112 ruthenium dye, synthesized by IICT-India and reported in WP1, for which we got essentially no efficiency decrease after 1000h of long-term light soaking.
Peng Qin , Sanghyun Paek , M. Ibrahim Dar , Norman Pellet , Jaejung Ko , Michael Grätzel , and Mohammad Khaja Nazeeruddin
J. Am. Chem. Soc., Just Accepted Manuscript
DOI: 10.1021/ja503272q
Publication Date (Web): May 28, 2014
Copyright © 2014 American Chemical Society
A low band gap quinolizino acridine based molecule was designed and synthesized as new hole transporting material in organic-inorganic hybrid lead halide perovskite solar cells. The functionalized quinolizino acridine compound showed an effective hole mobility in the same range of the state-of-the-art spiro-MeOTAD and an appropriate oxidation potential of 5.23 eV vs. the vacuum level. The device based on this new hole transporting material achieved high power conversion efficiency of 12.8% under the illumination of 98.8 mW cm-2, which was better than the well-known spiro-MeOTAD under the same conditions. Besides, this molecule could work alone without any additives, thus making it to be a promising candidate for solid-state photovoltaic application.
http://pubs.acs.org/doi/abs/10.1021/ja503272q?journalCode=jacsat
Hier ein schöner alter Beitrag:
sekko1982: Schlusskurs in Australien 17.04.08 08:40 #49
1,085 / +17.3% / Volumen:469,627
Hoffentlichen legen wir an der Frankfurter Börse ebenfalls zweistellig nach :)
Mal schauen, vielleicht wirds ja noch was mit der Dyesol-Story, das wäre der Hammer!
Also weiterhin Daumen drücken.
Doch diesmal sind wir dem Ziel aber näher ... 
29 05 2014
A new record efficiency of the perovskite solar cell has been published in the 2014 NREL chart, at 17.9% power conversion efficiency. This solar cell was made by researchers at KRICT Institute in Daejeon, South Korea, that appear in the picture below.
Seok’s group has been producing outstanding results on this field. Yesterday they published a paper in EES in which they present a 1.4 V solar cell. High voltage perovskite solar cells were demonstrated before by Gary Hodes, but the Korean group shows 6.7% efficiency, which makes this cell a rather competitive candidate for large voltage applications. Note that a single cell is close to the voltage of a standard AAA battery…
S. Ryu, J. H. Noh, N. J. Jeon, Y. C. Kim, W. S. Yang, J. W. Seo and S. I. Seok, Energy Environ. Sci., 2014, DOI:10.1039/C4EE00762J.
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| Strategie | Hebel | |||
| Steigender DAX-Kurs | 5,00 | 10,00 | 14,95 | |
| Fallender DAX-Kurs | 5,00 | 10,12 | 14,86 | |
| Wertung | Antworten | Thema | Verfasser | letzter Verfasser | letzter Beitrag | |
| 11 | Greatcell Solar Verlustrealisierung - Aktientausch | douglas_h | douglas_h | 25.04.21 10:54 | ||
| 3 | 296 | GREATCELL SOLAR, jetzt erst recht! | 24dan | SonneMW | 25.04.21 03:20 | |
| 46 | 12.742 | Dyesol LTD, es geht weiter ! | Boersenharry | Fortunato69 | 25.04.21 02:20 | |
| 7 | DYESOL - Wieviel Aktien halltet Ihr? 07_2014 | Steff23 | chinasky | 25.04.21 01:51 | ||
| 18 | DYESOL - Wieviele Aktien haltet Ihr? 09_2014 | Steff23 | Steff23 | 25.04.21 01:27 |