Chromaticity manipulation of indoor photovoltaic cells

Zhi Hao Chen, Hang Yin*, Johnny Ka Wai Ho, Li Yong Cui, Shu Kong So, Xiao Tao Hao*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

7 Citations (Scopus)


Organic photovoltaic cells are appealing as indoor illumination harvesters to drive off-grid electronics in the Internet of things. However, a desirable output power usually requires expansive and dark active layers to absorb sufficient incident photons. The deployment of such large-scale dark objects is detrimental to the elaborately designed indoor lighting environment and affects human visual perceptions. Here, we propose a free-contact strategy to adjust the chromaticity of the transmitted indoor light by applying one-dimensional photonic crystals. Combining photonic crystals with various transmittances outside the photovoltaic cells, the spectral power distribution of the transmitted light can be precisely manipulated to realize a broad and consecutive color modulation covering the region from blue to orange. For certain photonic crystals, the chromaticity of propagated light can be recovered close to the light source. This work presents a solution to relieve light-disturbing in the application of organic photovoltaic cells under indoor illuminations.

Original languageEnglish
Article number043301
Number of pages6
JournalApplied Physics Letters
Issue number4
Publication statusPublished - 25 Jan 2021

Scopus Subject Areas

  • Physics and Astronomy (miscellaneous)


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