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A sequential condensation route as a versatile platform for low cost and efficient hole transport materials in perovskite solar cells

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Benzotrithiophene-Based Hole-Transporting Materials for 18.2% Perovskite Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Iwan Zimmermann, Cristina Roldán Carmona, Paul Gratia, Sadig Aghazada, Inés Garcia Benito

New star-shaped benzotrithiophene (BTT)-based hole-transporting materials (HTM) BTT-1, BTT-2 and BTT-3 have been obtained through a facile synthetic route by crosslinking triarylamine-based donor groups with a benzotrithiophene (BTT) core. The BTT HTMs wer ...

Wiley-V C H Verlag Gmbh2016

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The hole transporting material (HTM) is an essential component in perovskite solar cells (PSCs) for efficient extraction and collection of the photoinduced charges. Triphenylamine- and carbazole-based derivatives have extensively been explored as alternati ...

Amer Chemical Soc2016

Organohalide Lead Perovskites for Photovoltaic Applications

Mohammad Khaja Nazeeruddin

Perovskite solar cells have recently exhibited a significant leap in efficiency due to their broad absorption, high optical absorption coefficient, very low exciton binding energy, long carrier diffusion lengths, efficient charge collection, and very high ...

Amer Chemical Soc2016

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Small-molecule hole transporting materials based on methoxydiphenylamine-substituted fluorene fragments were synthesized and incorporated into a perovskite solar cell, which displayed a power conversion efficiency of up to 19.96%, one of the highest conver ...

Royal Soc Chemistry2016

The Cover picture shows deoxyribose nucleic acid (DNA) that has suitable optical and energy levels to be used as hole-transporting material (HTM) in perovskite solar cells. The power conversion efficiency and stability of a perovskite solar cell utilizing ...

Wiley-VCH Verlag Berlin2016

The recent advances in perovskite solar cells (PSCs) created a tsunami effect in the photovoltaic community. PSCs are newfangled high-performance photovoltaic devices with low cost that are solution processable for large-scale energy production. The power ...

Wiley-V C H Verlag Gmbh2016

Enhanced electronic properties in mesoporous TiO2 via lithium doping for high-efficiency perovskite solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Fabrizio Giordano, Ulf Anders Hagfeldt, Michael Saliba, Antonio Abate, Taisuke Matsui

Perovskite solar cells are one of the most promising photovoltaic technologies with their extraordinary progress in efficiency and the simple processes required to produce them. However, the frequent presence of a pronounced hysteresis in the current volta ...

Nature Publishing Group2016

• Invited for this month's cover are the groups at Ecole Polytechnique Federale de Lausanne and Kyung Hee University, who successfully applied DNA as the hole-transporting layer in a perovskite solar cell. The Full Paper itself is available at 10.1002/cssc ...

Wiley-V C H Verlag Gmbh2016

Highly Efficient Perovskite Solar Cells Employing an Easily Attainable Bifluorenylidene-Based Hole-Transporting Material

Mohammad Khaja Nazeeruddin, Peng Gao, Michael Saliba, Sanghyun Paek, Kasparas Rakstys, Paul Gratia

The 4,4'-dimethoxydiphenylamine-substituted 9,9'-bifluorenylidene (KR216) hole transporting material has been synthesized using a straightforward two-step procedure from commercially available and inexpensive starting reagents, mimicking the synthetically ...

Wiley-Blackwell2016

Efficiency enhancement of perovskite solar cells via incorporation of phenylethenyl side arms into indolocarbazole-based hole transporting materials

Mohammad Khaja Nazeeruddin, Iwan Zimmermann, Kasparas Rakstys, Ieva Petrikyté

Small-molecule hole transporting materials based on an indolocar-bazole core were synthesized and incorporated into perovskite solar cells, which displayed a power conversion efficiency up to 15.24%. The investigated hole transporting materials were synthe ...

Royal Soc Chemistry2016