The fabrication of different functional layers by means of atomic layer deposition is proposed for the novel organo-lead halide perovskite solar cells. A plasma- assisted process at 150 °C was adopted to deposit an efficient TiO2 compact blocking layer on ITO-polymer substrates. Efficient flexible devices were obtained already with layers as thin as 10 nm. A Thermal ALD Al2O3 process at 150 °C was successfully applied on a mesoscopic anatase TiO2 structure: an improvement of the overall performance of the solar cell (+13%) was measured with only 1 ALD cycle compared to devices without over-layer. Interestingly, a drastic reduction of the performance was observed when increasing the number of the cycles.
Zardetto, V., DI GIACOMO, F., Mohammed, M., Lucarelli, G., Razza, S., D'Epifanio, A., et al. (2015). Opportunities of atomic layer deposition for perovskite solar cells. ECS TRANSACTIONS, 69(7), 15-22 [10.1149/06907.0015ecst].
Opportunities of atomic layer deposition for perovskite solar cells
ZARDETTO, VALERIO;DI GIACOMO, FRANCESCO;D'EPIFANIO, ALESSANDRA;LICOCCIA, SILVIA;DI CARLO, ALDO;BROWN, THOMAS MEREDITH;
2015-01-01
Abstract
The fabrication of different functional layers by means of atomic layer deposition is proposed for the novel organo-lead halide perovskite solar cells. A plasma- assisted process at 150 °C was adopted to deposit an efficient TiO2 compact blocking layer on ITO-polymer substrates. Efficient flexible devices were obtained already with layers as thin as 10 nm. A Thermal ALD Al2O3 process at 150 °C was successfully applied on a mesoscopic anatase TiO2 structure: an improvement of the overall performance of the solar cell (+13%) was measured with only 1 ALD cycle compared to devices without over-layer. Interestingly, a drastic reduction of the performance was observed when increasing the number of the cycles.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
