Université de Fribourg

Ultrafast charge carrier dynamics in CH₃NH₃PbI₃: evidence for hot hole injection into spiro-OMeTAD

Brauer, Jan C. ; Lee, Yong Hui ; Nazeeruddin, Mohammad Khaja ; Banerji, Natalie

In: Journal of Materials Chemistry C, 2016, vol. 4, no. 25, p. 5922–5931

Hybrid organic–inorganic metal perovskites have emerged as highly promising materials for solar energy conversion. However, key questions regarding the working principles of perovskite solar cells remain to be answered in order to improve the design of such devices. In the present study, we have investigated the influence of excess excitation energy on the initial photo-products generated...

Université de Fribourg

Charge transfer dynamics from organometal halide perovskite to polymeric hole transport materials in hybrid solar cells

Brauer, Jan C. ; Lee, Yong Hui ; Nazeeruddin, Mohammad Khaja ; Banerji, Natalie

In: The Journal of Physical Chemistry Letters, 2015, vol. 6, no. 18, p. 3675–3681

Organometal halide perovskites have emerged as promising next-generation solar cell technologies presenting outstanding efficiencies. However, many questions concerning their working principles remain to be answered. Here, we present a detailed study of hole transfer dynamics into polymeric hole transporting materials (HTMs), poly(triarylamine) (PTAA), poly(3-hexylthiophee-2,5-diyl (P3HT), and...