Preparation and Application of <110> Dislocation-Free Monocrystalline Silicon by CZ Method

Abstract

This project studies the impact on ‹110› dislocation-free monocrystal grown by Czochralski method (hereinafter referred to as CZ) through puller's heat zone system and pulling process. Adjusting heat system appropriately, increasing pulling speed sharply, controlling the diameter and length in neck growth, controlling the speed in crown growth, increasing the length and diameter of tail, all of which are key elements to guarantee the success of ‹110› dislocation-free monocrystal pulling. The ‹110› dislocation-free monocrystal we developed under this project can be applied to optoelectronic devices for both semiconductor and solar industry. According to the verifications of the customer, the solar cell manufactured by ‹110› silicon monocrystal has unique features of ultra-thin and high efficiency. Furthermore, it can solve the problem caused by sheltering issue. Compared to traditional solar cell, silicon usage is 3 times less. As a result, it reduces the material cost dramatically.

Improved extraction efficiency of bakuchiol with antioxidant and whitening bioactivities from the seeds of Psoralea corylifolia L.

“…Furthermore, the strong acid and alkali reagents used in the extraction may cause environment pollution and thus this method is not applicable for the industrial production. [16] Wang et al [17] extracted the pulverized seeds of P. corylifolia by petroleum ether to get a crude extract and then purified bakuchiol from the extract by twice silica gel column chromatography. Although they got a high purity rate (98) of bakuchiol, the net extraction rate was only 2.93.…”

Description of the first species of Scutigerella (Symphyla, Scutigerellidae) from China, with mitogenomic and genetic divergence analysis

“…However, Scutigerella gratiae (Ryder, 1881) is missing in the database of ITIS, but it is recorded in the virtual research environment Myriatrix, The Fellegship of the Rings (2020 onwards) ( http://myriatrix.myspecies.info ), thus 37 valid Scutigerella species in total. The occurrence of Scutigerella in China (Hunan Province) was only once mentioned in a monograph ( Zhang and Wang 1992 ), but the species remained undetermined.…”

First record of Scolopendrellopsis from China with the description of a new species (Myriapoda, Symphyla)

“…After that several species were described from India (Scheller 1971), Indonesia (Scheller 1988), USSR (Scheller and Golovatch 1982), Russian Far East (Scheller and Mikhaljova 2000) and Iran (Scheller et al 2011). Symphyla is poorly studied in China with only Hanseniellacaldaria from Zhejiang province and Geophilellaorientalis from Hebei province recorded (Zhang and Wang 1992; Bu and Jin 2018). Three genera, Scutigerella , Scolopendrelloides , and Symphylella , were also mentioned for China, but without determined species recorded (Zhang and Wang 1992).…”

“…Symphyla is poorly studied in China with only Hanseniellacaldaria from Zhejiang province and Geophilellaorientalis from Hebei province recorded (Zhang and Wang 1992; Bu and Jin 2018). Three genera, Scutigerella , Scolopendrelloides , and Symphylella , were also mentioned for China, but without determined species recorded (Zhang and Wang 1992). During our ecological survey of soil animals of Zhejiang, Jiangsu, and Hainan provinces in recent years, many symphylans were obtained.…”