Ina tata nei, he roopu a Ahorangi WANG Mingtai mai i te Institute of Solid State Physics, Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences (CAS) i whakatakoto he huarahi whakahihiri ki te whakarei ake i te pai o nga pūtau solar. Ko ta ratou arotahi ki te antimony trisulfide (Sb2S3) hei kaihoroi photovoltaic kua arahina ki te rautaki Whakarara Mahere Heterojunction (PPHJ) mo te whakarite i nga pūtau solar tino pai.