Publications de Francisco Javier Ramos Mellado

Light management: porous 1-dimensional nanocolumnar structures as effective photonic crystals for perovskite solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Francisco Javier Ramos Mellado

Hybrid organic-inorganic perovskite solar cells are a topic of increasing interest, as in a short time span they are able to lead in the third generation photovoltaics. Organohalide perovskites possess exceptional optoelectronic and physical properties, th ...

Royal Society of Chemistry2016

A dopant free linear acene derivative as a hole transport material for perovskite pigmented solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Peng Gao, Francisco Javier Ramos Mellado

A solution processable, molecular organic semiconductor, 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene), was employed as hole transport material (HTM) in mesoscopic methylammonium lead iodide perovskite solar cells. TIPS-pentacene is potenti ...

Royal Soc Chemistry2015

Non-aggregated Zn(II)octa(2,6-diphenylphenoxy) phthalocyanine as a hole transporting material for efficient perovskite solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Antonio Abate, Francisco Javier Ramos Mellado

A non-aggregated Zn(II)octa(2,6-diphenylphenoxy) phthalocyanine (coded as TT80) has been used as a hole-transporting material for perovskite solar cells. The cells were fabricated under three different configurations by changing the uptake solvent (chlorob ...

Royal Society of Chemistry2015

Direct monitoring of ultrafast electron and hole dynamics in perovskite solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Francisco Javier Ramos Mellado

Organic-inorganic hybrid perovskite solar cells have emerged as cost effective efficient light-toelectricity conversion devices. Unravelling the time scale and the mechanisms that govern the charge carrier dynamics is of paramount importance for a clear un ...

Royal Society of Chemistry2015

Perovskite Solar Cells Based on Nanocolumnar PlasmaDeposited ZnO Thin Films

Michael Graetzel, Mohammad Khaja Nazeeruddin, Francisco Javier Ramos Mellado

ZnO thin films having a nanocolumnar microstructure are grown by plasma-enhanced chemical vapor deposition at 423 K on pre-treated fluorine-doped tin oxide (FTO) substrates. The films consist of c-axis-oriented wurtzite ZnO nanocolumns with well-defined mi ...

Wiley-Blackwell2014

Highly efficient flexible cathodes for dye sensitized solar cells to complement Pt@TCO coatings

Mohammad Khaja Nazeeruddin, Francisco Javier Ramos Mellado

Solution-processed, semi-transparent, conductive electrodes based on PEDOT: PSS [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)] using silver grids were developed on a plastic support. The flexible electrode (flextrode) was employed as a cathode i ...

Royal Society of Chemistry2014

Photoanode Based on (001)-Oriented Anatase Nanoplatelets for Organic-Inorganic Lead Iodide Perovskite Solar Cell

Michael Graetzel, Mohammad Khaja Nazeeruddin, Mohammad Ibrahim Dar, Francisco Javier Ramos Mellado

The methodology adopted for the preparation of perovskites plays a critical role in achieving high efficiency. Toward this direction, various strategies have been adopted to achieve a rational control over the growth of the perovskite layer for the fabrica ...

American Chemical Society2014