Fotovoltaica – El creador de las céluas PERC, Premio de Tecnología del Milenio

Green developed PERC cells with his team in the eighties, improving the quality of the upper and rear surfaces of conventional silicon solar cells. When solar light, in the form of particles called photons, enters a cell, it excites the electrons inside the silicon. En este estado excited, los electrones pueden desplazarse por la cella, creando corriente eléctrica. Well, the improved surface of the PERC cells – explained by the Academy of Technology of Finland – allows the electrons to maintain this state of excitation – they move freely – during more time, which translates into a greater generation of energy, es decir, en una mayor eficiencia. Thus, PERC technology has contributed to increasing the conversion efficiency of conventional solar cells by more than 50% in relative terms, from 16.5% at the beginning of the 80s to 25% at the beginning of the 2000s. -apuntan desde la Academia-, the technology PERC represents almost 90% of the world market of solar cells.

Minna Palmroth, President of the Council of Administration of the Academia de Tecnología de Finlandia: “the innovation of Professor Green has improved, and will continue to improve, to a great extent, the quality of life of thousands of millions of people in the world and the potential for environmentally sustainable development, from national electricity networks to private homes.”

Päivi Törmä, president of the International Selection Committee for the Millennium Technology Award: “PERC cells can help offer low-cost energy solutions and mitigate climate change. It is necessary to follow the investigation of solar cells to replace limited supply components, such as la plata, with more abundant alternatives”

The innovation introduced by Green -explained by the Academy- has greatly reduced the cost of using solar panels, making solar energy more affordable than alternatives dependent on fossil fuels.

Martin Green: “es un gran honor haber sido selección para recibir un premio tan prestigioso. No solo reconocie mi contribution a la conversion fotovoltaica [la transformación de la luz en energía eléctrica], sino también los logros de mis estudiantes y colleges investigação, así como los de la comunidad comercial y de investigación fotovoltaica. I believe that this prize can contribute to increasing my credibility as a spokesperson for what I need to do to face climate change. Para poder mantenar la trajectory de la civilization humana en el planeta que compartimos, tenemos que pasar de los combustibles fósiles a las energías renovables. El ritmo del cambio se acelera y en la próxima decada, el mundo se decantará por la energía solar y eólica. Creo que nos entamentes frente a una enorme transformación de gran relevancia histórica”

Green and his team are currently working on combined cell technologies to reach 40% efficiency in solar cells, exploring options such as stacking cells.

Martin Green: “las células solares are used more and more to replace large power plants that use fossil fuels. In 2021, twenty countries or regions, among which are Alemania, Australia, Chile, España, Grecia, Italia, Países Bajos, Vietnam and California generated between 8% and 25% of their total electricity supply from solar energy, and this figure is growing rapidly. , justo en el momento en que la importancia de actuar immediately para hacer frente al cambio climática se ha hecho abrumadoramente evident”

The presentation of the award to Green has held place in the framework of the Foro de Innovación del Milenio, evento organizado también por la Academia de Tecnología de Finlandia y que será clausurado hoy. El Foro brings together experts of international renown to debate how technology can resolve the major challenges of the world.

Among the speakers are investigative journalist and executive director of Bellingcat, Christo Grozev, who implicated the Russian government in the poisoning of the opposition leader, Alexei Navalny, and who is currently investigating war crimes committed by Russia in Ukraine.

El Foro will also have the presence of Tim O’Reilly, precursor of web 2.0 and expert of Silicon Valley, and Marissa Mayer, ex-director of Yahoo, y vigésima empleada de Google, convirtiendo en la primera mujer de su equipo de ingenieros.

The session of the Innovation Forum on diversity in research and development will be organized by the Council of Research and Innovation of Finland, chaired by the Finnish prime minister.

About the prize
email Premio de Tecnología del Milenio, endowed with a million euros, presumes to be “the most important award in the field of technological innovations for a better life”. Su proposito es reconocer “trabajos que mejoran el bienestar humano, la biodiversity y la sustainability”. Supervisado por la Academia de Tecnología de Finlandia, it was awarded for the first time in 2004 and its sponsor is the president of the Republic of Finlandia, a position currently held by Sauli Niinistö.

The winners are selected by a distinguished international panel of experts from the academic and industrial world. The innovations -explained from the organization- must be supported by rigorous academic and scientific research and meet various criteria, such as promoting sustainable development and biodiversity, generating applications with commercial viability and creating accessible socioeconomic value.

Among the previously awarded projects are DNA sequencing that helped develop vaccines against Covid19, ethical research with mother cells and versatile and affordable intelligent technology.

Anteriores galardonados y galardonadas con el Premio de Tecnología del Milenio
2004 – Sir Tim Berners-Lee por la World Wide Web.

2006 – Professor Shuji Nakamura for the successful production of the primer LED azul, the last step to create an LED blanco brillante.

2008 – Professor Robert Langer por su trabajo en la administración controlleda de pharmacos, la tecnologia subyacente a las vacunas de ARN mensajero.

2010 – Professor Michael Grätzel for solar cells sensitized by third-generation colorants, which allow the creation of electric windows and low-cost solar panels.

2012 – Joint winners: professor Shinya Yamanaka, for ethical research with mother cells and Linus Torvalds for open source operating system Linux, which has become the base of smartphones, tablets, digital television recorders and Android supercomputers in all mundo.

2014 – Professor Stuart Parkin, por desarrollar una major densidas de storage de datos, lo que ha permitido multiplicar por mil la capacidad de storage de las unidades de magnetic disc.

2016 – Doctora Frances Arnold, por su trabajo relativo a la evolution directed, que imita la evolution natural para crear nuevas y mejores proteins en laboratorio, y que se está utilizando para crear alternatives ecológica a las materias primas de origen fósil.

2018 – Doctor Tuomo Suntola, por la deposición de capas atómicas (ALD, por sus siglas en inglés), que permite fabricar finas de material de nanoescala para microprocessorsadores y dispositivos de memoria digital, lo que ha contributido a revolucionario los smartphones.

2020 – Joint winners: professor Shankar Balasubramanian and professor David Klenerman, for the new generation sequencing technology (NGS, for its acronym in English), which can determine with precision the complete DNA sequence of an organism in low cost and tiempos superrápidos, y que ha ayudado a los inquisitors to identify the underlying factors in los individuos que contribuen a su respuesta immune a la COVID-19.

About the Milenio Innovation Forum
El Foro de Innovación del Milenio brings together people from the business, academic and public sectors to debate new solutions to global problems. This year’s edition has included sessions on diversity in I+D+i, ecological transition, digital transformation and resilience.

About the Academia de Tecnología de Finlandia
The Academia de Tecnología de Finlandia (TAF, por sus siglas en inglés) grants the Premio de Tecnología del Milenio, endowed with a million euros, and organizes associated events and initiatives. Constituye un pointo de encuentro internacional para la vida empresarial, el mundo academia y los responsable politicos, y promueve la posición de Finlandia en la comunidad internacional.

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