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International Affairs Students Current Students Alumni Faculty/Staff Careers--> TOHOKU UNIVERSITYCREATING GLOBAL EXCELLENCE Search 日本語 Contact Tohoku University --> --> About Facts & Figures Facilities Organization Chart History President's Message Top Global University Project Designated National University Global Network Promotional Videos Academics Undergraduate Graduate Courses in English Exchange Programs Summer Programs Double Degree Programs Academic Calendar Syllabus Admissions Undergraduate Admissions Graduate Admissions Fees and Expenses Financial Aid Research Feature Highlights Research Releases University Research News Research Institutes Visitor Research Center Research Profiles Academic Research Staff Campus Life International Support Office IT Services Facilities Dining & Shops Campus Bus Clubs & Circles News University News Research--> Arts & Culture Health & Sports Campus & Community Press Release--> International Visit Alumni Careers Events Exhibits Music Special Event Lecture Alumni--> Map & Directions Campus Maps & Bus--> Facilities Map--> TOHOKUUNIVERSITY About Academics Admissions Research Campus Life News Events International Affairs Students Current Students Alumni Faculty/Staff Promotional Videos Subscribe to our Newsletter Map & Directions Contact Jobs & Vacancies Emergency Information Site Map 日本語 Close Home News Research Ultra-small UV-light sensing Si photodiode launched in academic-industry collaboration News Ultra-small UV-light sensing Si photodiode launched in academic-industry collaboration 2018-09-06 Research Tohoku University and semiconductor manufacturer ABLIC Inc., have jointly developed mass production technology for an ultraviolet (UV) light sensor, making it one of the smallest UV sensing devices in the industry [1] The newly-launched silicon photodiode product S-5420 can measure UV-light from the UV-A range (wavelength of 315 - 400 nm), which causes skin blemishes and wrinkles, to the UV-B range (wavelength 280 - 315 nm), which causes sunburn, skin cancer, UV keratitis and cataracts. Spectral sensitivity characteristics of the developed UV light Si photodiode. The S-5420 can even detect UV light from the UV-A to the UV-B range without an optical filter, by calculating the difference between high and low UV light sensitivity photodiode signals to remove visible light. According to Professor Shigetoshi Sugawa of Tohoku University's Graduate School of Engineering, S-5420's small, transparent resin package fits it into a variety of wearable devices, allowing for easy usability. "Versatile silicon semiconductor sensors are more adaptive to integrations with circuits and add more functions than compound semiconductor UV sensors," he said. "Its compact size gives industrial devices like UV irradiance and exposure meters higher design flexibility." The UV light Si photodiode S-5420 housed in a SON-6C resin package. The S-5420 is another step forward for Sugawa and research partner Associate Professor Rihito Kuroda. They had previously developed a silicon photodiode technology providing 190~1100nm wide spectral response and high-performance resistance against UV light irradiation. "There has been growing interest within the medical and healthcare communities in the prevention of sunburns and skin blemishes," said Kuroda. "As such, easy measurement of UV light through the use of a smartphone or a wearable device could be of great benefit to preventive medicine, healthcare and aesthetic medicine." The need to measure invisible UV light is also increasing in industrial fields, where equipment such as UV curing machines and printers using UV curable ink are now being used more frequently than ever before. Footnote: [1] Based on the research as of June 2018. Link: ABLIC Inc. Datasheet News in Japanese Contact: Rihito KurodaGraduate School of Engineering, Tohoku UniversityEmail: rihito.kuroda.e3tohoku.ac.jp Website: http://www.ecei.tohoku.ac.jp/ecei_web/Laboratory/sugawa_e_index.html Category University News Research Arts & Culture Health & Sports Campus & Community International Visits Alumni Careers COVID-19 Archives 2014&＃24180; 2015&＃24180; 2016&＃24180; 2017&＃24180; 2018&＃24180; 2019&＃24180; 2020&＃24180; 2021&＃24180; 2022&＃24180; 2023&＃24180; 2024&＃24180; Recent News 2024-04-10 University News Tohoku University&＃039;s New President Meets the Media 2024-04-10 Careers Recruitment Notice: Associate Professor 2024-04-03 University News Tohoku University Entrance Ceremony, Spring 2024 2024-04-02 Careers Recruitment Notice: Assistant Professor 2024-04-01 University News In Conversation with Hideo Ohno Archives Page Top About Tohoku University Academics Admissions Research Campus Life News Events International Affairs Students Alumni Promotional Videos Subscribe to our Newsletter Map & Directions Contact Tohoku University Jobs & Vacancies Emergency Information Site Map Privacy Policy Media Enquiries Parent & Family Support Public Facilities Contact Tohoku University