Performance Characterization of Dye-Sensitized Photovoltaics under Indoor Lighting

Chia Yuan Chen, Zih Hong Jian, Shih Han Huang, Kun Mu Lee, Ming Hsuan Kao, Chang Hong Shen, Jia Min Shieh, Chin Li Wang, Chiung Wen Chang, Bo Zhi Lin, Ching Yao Lin, Ting Kuang Chang, Yun Chi, Cheng Yu Chi, Wei Ting Wang, Yian Tai, Ming De Lu, Yung Liang Tung, Po Ting Chou, Wen Ti WuTahsin J. Chow, Peter Chen, Xiang Hao Luo, Yuh Lang Lee, Chih Chung Wu, Chih Ming Chen, Chen Yu Yeh, Miao Syuan Fan, Jia De Peng, Kuo Chuan Ho, Yu Nan Liu, Hsiao Yi Lee, Chien Yu Chen, Hao Wu Lin, Chia Te Yen, Yu Ching Huang, Cheng Si Tsao, Yu Chien Ting, Tzu Chien Wei, Chun Guey Wu

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


Indoor utilization of emerging photovoltaics is promising; however, efficiency characterization under room lighting is challenging. We report the first round-robin interlaboratory study of performance measurement for dye-sensitized photovoltaics (cells and mini-modules) and one silicon solar cell under a fluorescent dim light. Among 15 research groups, the relative deviation in power conversion efficiency (PCE) of the samples reaches an unprecedented 152%. On the basis of the comprehensive results, the gap between photometry and radiometry measurements and the response of devices to the dim illumination are identified as critical obstacles to the correct PCE. Therefore, we use an illuminometer as a prime standard with a spectroradiometer to quantify the intensity of indoor lighting and adopt the reverse-biased current-voltage (I-V) characteristics as an indicator to qualify the I-V sampling time for dye-sensitized photovoltaics. The recommendations can brighten the prospects of emerging photovoltaics for indoor applications.

Original languageEnglish
Pages (from-to)1824-1830
Number of pages7
JournalJournal of Physical Chemistry Letters
Issue number8
StatePublished - 20 Apr 2017


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