Flexible organic P3HT:PCBM bulk-heterojunction modules with more than 1 year outdoor lifetime

Initial Performance Changes of Polymer/Fullerene Solar Cells by Short‐Time Exposure to Simulated Solar Light

“…This is in good agreement with a result reported in Ref. [25], although the temperature of the sample holder surface during measurement was ca. 38 8C in our experiment versus a measurement temperature of 65 8C in Ref.…”

“…38 8C in our experiment versus a measurement temperature of 65 8C in Ref. [25]. Similar up-and-down fluctuations of J sc were observed for the C-2 device (Figure 3 b) but the amplitude of the J sc change was larger than the C-1 device.…”

“…To date, tens of reports on the stability and/or lifetime of polymer solar cells have appeared. [14][15][16][17][18][19][20][21][22][23][24][25][26] These reports have shown the importance of encapsulation to avoid attack by oxygen, as well-documented in the study of organic light-emitting devices (OLEDs). [27] The studies pay particular attention to the time-dependent decay of short-circuit current density (J sc ) and open-circuit voltage (V oc ), in the presence of performance oscillation, in polymer solar cells and/or modules prepared using blend films of poly(3-hexylthiophene) (P3HT) and 1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6)C 61 (PCBM).…”

“…[27] The studies pay particular attention to the time-dependent decay of short-circuit current density (J sc ) and open-circuit voltage (V oc ), in the presence of performance oscillation, in polymer solar cells and/or modules prepared using blend films of poly(3-hexylthiophene) (P3HT) and 1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6)C 61 (PCBM). [25] The parameters J sc and V oc quickly degraded after about 200 h at 65 8C, whereas the fill factor (FF) increased up to 600 h. However, the initial quick drop in J sc and V oc was not clearly addressed although it might be key to understanding the stability issues of polymer solar cells.…”

Highly durable inverted-type organic solar cell using amorphous titanium oxide as electron collection electrode inserted between ITO and organic layer

“…A few instances have been reported on the stability of the solar cells compared to on the improvement of the conversion efficiency [10][11][12], although it is very important to increase the stability as well as the conversion efficiency. It is well known that the photodegradation of polymers and polymer/oxide composites, and the degradation at the ITO and the metal electrodes in organic thin film solar cells are caused by reactions with oxygen and water [13].…”